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Duncan Murrell - A Whale of a Time

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Duncan Murrell - A Whale of a Time

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  • This photo was taken near the Tlingit village of Kake on Kupreanof Island and illustrates the problems of the practice of clear-cut logging that persisted during the 1980s and 90s when I was based in Southeast Alaska. The extent of clear-cutting was much worse around native communities because the Alaska Native Claims Settlement Act of 1971 (ANCSA) awarded approximately 148,500,000 acres (601,000 km2) of Federal land in Alaska to private native corporations which were created under ANCSA. Transference of public National Forest land to a privately owned corporation removes it from protection by Federal law and allows the owners to use the land in whatever way they see fit without regard to the effects of the use on surrounding lands and ecosystems. This fact has caused much controversy involving the business interests of Native Regional Corporations and the personal interests of local Natives and non-Native residents of Southeastern Alaska, such as subsistence hunting and tourism.
    Alaska-humpbackwhale-bubblenet6.jpg
  • whale-shark-Puerto-Princesa44.jpg
  • They are opportunistic feeders and eat a wide range of fish including herring, Pollock, salmon, cod and rockfish as well as squid and shrimp. I have even observed them catching seagulls on the surface.
    Alaska-Steller-sealion9.jpg
  • This was one of the most unusual pods of bubble net feeding whales because of the appearance of some of their flukes every time they lunged to the surface. The co-operative feeding groups that use bubble nets to catch herring are very cohesive teams of individuals that feed together every summer, and their herding and feeding manoeuvres are tightly choreographed for maximum efficiency. This is the only pod that I witnessed using their flukes in this manner as part of their strategy.
    Alaska-humpbackwhale-bubblenet24.jpg
  • Humpback whales (Megaptera novaeangliae) cooperative feeding using a bubble net, I You Seen Cove, Chatham Strait, Southeast Alaska, USA.
    Alaska-humpbackwhale-bubblenet30.jpg
  • Alaska-humpbackwhale-bubblenet29.jpg
  • This photo illustrates the power of the whales when they surge to the surface. Their gaping jaws, scooping up hundreds of litres of sea water and fish, must exert a tremendous amount of drag. Some of the herring they were pursuing can be see flying through the air to escape their open mouths.
    Alaska-humpbackwhale-bubblenet20.jpg
  • Alaska-humpbackwhale-bubblenet23.jpg
  • Humpback whales (Megaptera novaeangliae) cooperative feeding using a bubble net, Morris Reef, Point Hayes, Chatham Strait, Southeast Alaska, USA.
    Alaska-humpbackwhale-bubblenet26.jpg
  • Alaska-humpbackwhale-bubblenet22.jpg
  • The left eye of the whale in the foreground is clearly visible and shut. The whales are lunging at such close proximity that they usually close their eyes to protect them from any damage, particularly from the flippers that are usually heavily encrusted with barnacles. Whales that are regular members of these teams of bubble net feeders are very distinctive because of all of the scratches inflicted on their bodies by barnacles.
    Alaska-humpbackwhale-bubblenet16.jpg
  • Alaska-humpbackwhale-bubblenet17.jpg
  • The tightly packed baleen plates are clearly visible. They are smooth on the outside, and coarse and bristly on the inside. They have a series of 270-400 fringed overlapping plates hanging from each side of the upper jaw, where teeth might otherwise be located.
    Alaska-humpbackwhale-bubblenet31.jpg
  • It seemed like there was an ever-increasing number of pleasure boats every year from the early days when sometimes I was blissfully alone with the whales all day. There was an increasing number of whale-watching boats as well as research boats; on one occasion i witnessed twenty different boats surrounding a pod of bubble netting whales. Most of the time the whales just continued their behaviour uninterrupted, but sometimes I witnessed them aborting their lunging and moving away to get away from a particularly noisy and intrusive boat, which included a research boat on one occasion.
    Alaska-humpbackwhale-bubblenet28.jpg
  • Sometimes the cooperative feeding group would surface unexpectedly. If the sea was calm and there were plenty of seabirds around to help me to track the whales then it was easier, but if it was more difficult to see the bubbles on the surface or there were distracting sounds of boat engines in the vicinity then anything could happen, and on this occasion the whales exploded out of the water right behind me and I barely had enough time to swivel around to take a photo.
    Alaska-humpbackwhale-bubblenet21.jpg
  • Alaska-humpbackwhale-bubblenet14.jpg
  • This is just before its distended throat contracts and the water is forced through its baleen plates as seen in the next photo. Clearly visible are the distinctive bumps or “tubercles” on the rostrum of a humpback whale that are found on no other species of whale. Each tubercle has a small hair or “vibrissae”, that probably act like whiskers as sensory organs for detecting their prey.
    Alaska-humpbackwhale-bubblenet9.jpg
  • The seabirds were such an integral part of my experiences with bubble net feeding whales. They followed the feeding whales just as tirelessly as I did from dawn to dusk, and probably beyond. I sometimes relied on them as an early-warning system to indicate where the whales were going to be surfacing, although quiet a lot of times there were false alarms and sometimes there were two different "opinions' going in opposite directions. It wasn't so important to watch them if it was calm because I could usually see the circle of bubbles on the surface, and estimate where the middle of the bubble net was. It was then just a matter of trying to stay as close to the bubbles as possible to avoid the centre where they would be surfacing. But sometimes if the sea was a bit choppy it became a bit more ambiguous because I couldn't tell which way the circle was curving. The best indicators if ever they were around were the sea lions, that always knew exactly where the whales were underwater.
    Alaska-humpbackwhale-bubblenet4.jpg
  • Alaska-humpbackwhale-bubblenet8.jpg
  • Humpback whales generally have heavy encrustations of barnacles on their throats, pectoral fins and flukes. Whale barnacles are barnacles belonging to the family Coronulidae. Whale barnacles attach themselves to the bodies of baleen whales during the barnacles's free-swimming larval stage. Though often described as parasites, the relationship is an example of obligate commensalism, as the barnacles neither harm, nor benefit, their host. But they are parasitised by whale lice that are actually amphipods: tiny crustaceans that feed off dead skin and pieces of flesh from their host. In normal situations, population of these parasites seem to stay in check, thereby not hurting their large hosts. Cetacean cyamid species are specific to different species of cetaceans and the one that lives on humpbacks is Cyamus boopis.
    Alaska-humpbackwhale-bubblenet32.jpg
  • Here is one member of the “Fantastic Five”, as I dubbed them, feeding on the Morris Reef. It clearly illustrates the moment when the whale shuts its jaws very quickly and firmly, and any water contained is forcefully ejected out through the baleen plates, and any prey is trapped inside its mouth. Also clearly visible are the distinctive bumps or “tubercles” on the rostrum of a humpback whale that are found on no other species of whale. Each tubercle has a small hair or “vibrissae”, that probably act like whiskers as sensory organs for detecting their prey.
    Alaska-humpbackwhale-bubblenet10.jpg
  • This photo shows how much the whales' jaws are distended when lunge feeding like this. A solitary Pacific herring (Clupea pallasii) can be seen in the middle as well as the bristles on the inside of the baleen plates.
    Alaska-humpbackwhale-bubblenet11.jpg
  • This was the place where I observed and photographed their spectacular cooperative feeding using a bubble net the most. Their baleen plates can clearly be seen in this photo. They have about 330 pairs of dark gray baleen plates with coarse gray bristles on the inside hanging from the jaws. They are about 25 inches (0.6 m) long and 13.5 inches (34 cm) wide. They act as filters to trap their prey when they shut their mouths and expel the water.
    Alaska-humpbackwhale-bubblenet1.jpg
  • Leucistic oceanic manta ray (Manta birostris) barrel roll feeding on tropical krill in Honda Bay, Palawan, the Philippines
    whale-shark-Puerto-Princesa42.tif
  • Leucistic oceanic manta ray (Manta birostris) barrel roll feeding on tropical krill in Honda Bay, Palawan, the Philippines
    whale-shark-Puerto-Princesa39.tif
  • Kayak-Madagascar-invertebrateNew-Mad...jpg
  • I became very familiar with the individual whales that made up the cooperative bubblenet feeding groups. I could identify them by their flukes, markings on their throats, barnacles and even sometimes by the sounds they made.<br />
I had known Dr Fred Sharpe of the Alaska Whale Foundation for many years during his research into the cooperative bubble net feeding strategies employed by the humpback whales of Southeast Alaska. He was particularly interested in the genetic relatedness of individual whales within and between cooperative pods, in addition to the local genetic sub-structuring of the population. He discovered that social foraging humpback whale pods possess a social complexity that is rarely observed in baleen whales. For example, individuals within these groups may develop long-term associations that may last for many years. There also appears to be a division of labour, with particular whales constantly leading the group, deploying the bubble nets, and producing the feeding calls. Furthermore, on each lunge, each whale in the group maintains the same position, indicating that this is an intrinsically choreographed feeding maneuver. My own personal observations with the same feeding groups over the course of the summer also bore this out. I observed how there were always core members of a group but other individual whales appeared to join them on a much more ad hoc basis before moving off again.<br />
He ascertained that it is only the more elusive, shoaling prey, such as Pacific herring, that require the same level of cooperative cohesiveness; easier prey such as krill do not require the same sophisticated feeding strategies as do shoaling fish.
    Alaska-humpbackwhale-bubblenet15.jpg
  • This feeding group clearly illustrates a typical formation with either one or two lead whales ascending vertically out of the water and the rest surfacing on their sides. Sometimes there was more than one lead whale, but quite often it was just one.
    Alaska-humpbackwhale-bubblenet19.jpg
  • This was my first successful entry in the BBC Wildlife Photographer of the Year Competition. I was Highly Commended for this photo of a lunge-feeding whale in the endangered species category in about 1994.
    Alaska-humpbackwhale-bubblenet2.jpg
  • This was the photo that won the Mammal Behavior Category in the BBC Wildlife Photographer of the Year Competition in 2002. It wasn’t until after I attended the award ceremony at the Natural History Museum that I discovered that many of the judges were unhappy that it wasn’t awarded the title of the overall winner of the competition, and I subsequently discovered that that was the general public consensus as well. It was unfortunate that the controversy that surrounded the overall winner that year soured such a proud moment in my photographic career. I was contacted a few years later by the new head of the judging panel, Mark Carwardine, to ask for any guidelines for submitting a winning photo, because he felt that my photo was the best entry that year. C’est la vie !<br />
But the moment that can never be diminished or tainted was the moment that I captured the image. I was photographing a bubble net feeding group very near the community of Tenakee Springs, which can be seen to the left of the whale. They came up behind me and I can clearly remember zooming my lens back so that I could fit the entire throat of the whale into the photo, and fortunately I was just able to do that or else it might not have been a perfect award-winning photo.
    Alaska-humpbackwhale-bubblenet33.jpg
  • This was one of the most incredible experiences of my life. It was a beautiful day that started well when I encountered a group of playful sea lions. They were inquisitive as always and hung around for quite a while. Most of them eventually swam away but one very inquisitive big bull remained with me for a while. It circled me and dived down beneath my kayak so that it could look up at me: then suddenly it erupted out of the sea right in front of the bow of my kayak, and there was the sudden jolt of eye-contact with his big bulging wild eyes that penetrated deep within my primal being. He then swam away and I continued paddling out to the middle of Seymour Canal. Then suddenly I heard a commotion in the distance, and when my eyes homed in on the source I saw the tell-tale dorsal fins of orcas, and then to my dismay I saw my friend on the surface near them: he was being attacked! I frantically paddled out towards the developing melee and wondered what I should do, and even contemplated trying to rescue him. But of course nature had to run its course, and I had to be grateful that I had a ringside seat for such a dramatic wild spectacle, as the orcas continued to ram the sea lion at high speed: I could see an orca cutting a confused furrow of water before colliding with its quarry in a big explosion of spray. The sea lion then reappeared at the surface gasping for breath, which tugged at my heart strings so much that I wanted to intervene, but there was a hungry family of predators that had to eat. Eventually it failed to resurface and it was all over...... but it wasn't because a pod of humpbacks happened to stumble onto the killing stage and they too were attacked by the orcas. I paddled right alongside the conflict and observed the whales rolling onto their sides and flailing their flippers to try to thwart their attackers. The orcas eventually gave up and disappeared along with the whales leaving me all alone highly charged and shaking with adrenaline.
    Southeast-Alaska- orca3.jpg
  • Alaska-humpbackwhale-bubblenet27.jpg
  • Alaska-humpbackwhale-bubblenet13.jpg
  • Some of the herring they are catching are clearly visible above the lunging whales. This was taken during a period of clear weather when there was a forest fire hundreds of miles away in the Yukon Territory, which created the unusual lighting.
    Alaska-humpbackwhale-bubblenet25.jpg
  • This was the "Famous Five" group of bubble netters that I became so familiar with around the Morris Reef at Point Hayes. I became familiar with all of their physical differences like the colouration and markings under their throats. The one on the left was the most distinctive with its pink throat and the circular scars where barnacles had dropped off; it was always one of the lead whales that lunged vertically. Humpback whales are usually identified by the distinctive colouration, markings and scars on the ventral side of the flukes. I could also identify them by the distinctive sound of each blow: some are more explosive: some more guttural: some sound like a ricochet: some are more like sneezes.
    Alaska-humpbackwhale-bubblenet7.jpg
  • There is so much power when the whales explode to the surface when they are feeding cooperatively with bubble nets. I could almost feel the energy being transmitted through the air and water when they exploded to the surface like this.
    Alaska-humpbackwhale-bubblenet5.jpg
  • whale-shark-Puerto-Princesa43.jpg
  • Leucistic oceanic manta ray (Manta birostris) barrel roll feeding on tropical krill in Honda Bay, Palawan, the Philippines
    whale-shark-Puerto-Princesa38.tif
  • Leucistic oceanic manta ray (Manta birostris) barrel roll feeding on tropical krill in Honda Bay, Palawan, the Philippines
    whale-shark-Puerto-Princesa41.tif
  • This photo clearly illustrates how distended the whales’ throat becomes when they lunge to the surface. They can dislocate their jaws like a snake does, and when they first reach the surface their jaws are open almost a full 180 degrees and their throat-poach hangs from their lower jaw like the throat-pouch of a pelican. The colouration of the throats varies and it was another means of identifying individuals. The open ventral pleats of this one appear to be pink because of the lack of pigmentation revealing the blood-rich tissue beneath. They really are a curious sight when their throats are fully distended like that, and they reminded me of Jabba the Hutt from the Star Wars movies.<br />
The formation of this bubble net feeding group also shows how there is always at least one lead whale that surfaces vertically, while the rest appear in a more lateral position around it. The individual whales that are regular members of the feeding group always maintain the same position in the tightly choreographed arrangement during the feeding ascent.
    Alaska-humpbackwhale-bubblenet3.tif
  • This was a typical bubble net feeding group with a permanent core of six individuals, but the size of the group would sometimes expand to about ten with the arrival of “guests”.
    Alaska-humpbackwhale-bubblenet18.jpg
  • This was the cooperative bubble net feeding group of 5 whales that regularly frequented the Morris Reef and I had many close encounters with. This photo clearly illustrates the structure and function of the baleen plates hanging from the roof of the whales’ mouth: they are smooth on the outside and frayed and bristly on the inside, thus creating a dense mat of coarse hairs to prevent any prey from escaping. The clearly defined palette in the roof of the mouth is also visible as is the common, distinctive pink “moustache” marking on the snout.
    Alaska-humpbackwhale-bubblenet12.jpg
  • Encountering orcas was a much rarer event than being with the humpback whales in Southeast Alaska so I always viewed it a special treat and a bonus for the summer. I always felt like I had to shift up into a much higher gear with the faster swimming orcas, and I usually knew that something out of the ordinary was going to happen. Most of pods of orcas I encountered were small transient pods specializing in hunting for marine mammals. On this occasion I was able to paddle many miles with a very large pod of at least 30 individuals that spanned the width of Chatham Strait. It was a beautiful, sunny day and the sea was calm without a puff of wind, which always makes it a bit easier to keep up with them. They appeared to be hunting for salmon by corralling them judging from the way their speed and direction changed periodically. It’s fascinating listening to the extensive chatter of orcas; they are much more vocal than the humpbacks and can produce a great range of sounds from clicks, squeals and whistles to what sounds like someone knocking on a door. The most memorable thing that happened on this day involved some young calves, which like the humpback calves were very inquisitive about me. I had just stopped for a rest and was observing the behavior of some of the orcas swimming past. Suddenly two calves popped their shiny black heads out of the water right next to the cockpit of my kayak! They were chattering away at me with their squealing and whistling, and after greeting them with a very surprised “hello’, my next instinct was to pat them on the head like puppies, but they disappeared before I had the chance to do that. <br />
I never ever felt threatened by orcas, even when the big bulls would sometimes swim straight towards me, and they would twist sharply at the last minute just before their tall dorsal fins could slice into me. I’m quite sure that they were only ever inquisitive about me.
    Southeast-Alaska- orca4.jpg
  • Pod of orcas (Orcinus orca) cruising in Chatham Strait, Southeast Alaska, USA.<br />
<br />
Encountering orcas was a much rarer event than being with the whales in Southeast Alaska so I always viewed it a special treat and a bonus for the summer. I always felt like I had to shift up into a much higher gear with the faster swimming orcas, and I usually knew that something out of the ordinary was going to happen. Most of pods of orcas I encountered were small transient pods specializing in hunting for marine mammals. On this occasion I was able to paddle many miles with a very large pod of at least 30 individuals that spanned the width of Chatham Strait. It was a beautiful, sunny day and the sea was calm without a puff of wind, which always makes it a bit easier to keep up with them. They appeared to be hunting for salmon by corralling them judging from the way their speed and direction changed periodically. It’s fascinating listening to the extensive chatter of orcas; they are much more vocal than the humpbacks and can produce a great range of sounds from clicks, squeals and whistles to what sounds like someone knocking on a door. The most memorable thing that happened on this day involved some young calves, which like the humpback calves were very inquisitive about me. I had just stopped for a rest and was observing the behavior of some of the orcas swimming past. Suddenly two calves popped their shiny black heads out of the water right next to the cockpit of my kayak! They were chattering away at me with their squealing and whistling, and after greeting them with a very surprised “hello’, my next instinct was to pat them on the head like puppies, but they disappeared before I had the chance to do that. <br />
I never ever felt threatened by orcas, even when the big bulls would sometimes swim straight towards me, and they would twist sharply at the last minute just before their tall dorsal fins could slice into me. I’m quite sure that they were only ever inquisitive about me.
    Humpback whales-12.tif
  • Based on differences in their lifestyles and food preferences, orcas are characterised as "resident" and "transient". These are transient orcas that were probably hunting for seals up in the glacial inlets of Glacier Bay. Transient orcas generally form smaller and more variable social groupings than residents, roam over a larger area of the coastal waters, and their appearance in particular places is not so predictable. They feed primarily on sea mammals such as seals and sea lions. The name "killer whale" probably stems from observations of transient orcas hunting.<br />
Resident Orcas.<br />
"Residents" are more predicatable because they frequent the same areas where they have a regular source of food in the summer and fall. They feed on salmon, live in close and extended family groups (matrilines and pods) and are highly social. Families can be distinguished from one another by their dialects.
    Southeast-Alaska- orca2.jpg
  • In 1888 the island was acquired by Sir George’s father, John Bullough, a cotton machinery manufacturer and self-made millionaire from Lancashire, England. Rum was used by the family as a hunting estate and when John Bullough died in 1891 he was interred on the west of the island, at Harris Bay, in a rock cut mausoleum. <br />
<br />
Legend has it, that a guest of the Bulloughs remarked that the rock cut mausoleum (having mosaic tiling to the interior) was “redolent of a public lavatory in Waterloo Station”.  Sir George, who had been knighted in 1901 and who had set about a programme of improvements on the island which included the building of Kinloch Castle, commissioned a new Grecian inspired family mausoleum (also at Harris Bay).  Upon its completion the original rock cut mausoleum was demolished and the remains of George’s late father were reinterred within the new monument.<br />
The body of John Bullough was joined by his son, Sir George Bullough who died in France in 1939 and that of his wife, Lady Monica who died in 1967 at the age of 98.  Though Sir George and Lady Monica’s daughter, Hermione, is not interred therein her name was inscribed on the side of her mother’s tomb during recent conservation works (completed 2006).<br />
Though the island and castle are now owned by Scottish Natural Heritage the mausoleum remains in hands of the Bullough Trustees.
    Kayaking-West-Coast-Scotland58.jpg
  • The most controversial logging in the Tongass has involved the roadless areas. Southeast Alaska is an extensive landscape, with communities scattered across the archipelago on different islands, isolated from each other and the mainland road system. The road system that exists in the region is in place because of the resource extraction history in the region, primarily established by the Forest Service to enable timber harvest. Once in place, these roads serve to connect local communities and visitors to recreation, hunting, fishing, and subsistence opportunities long into the future. However, installing roads in the vast wilderness areas of the Tongass is also a point of controversy for many in the American public, as reflected in the roadless area conservation movement, which has opposed further road construction on the grounds that it would promote habitat fragmentation, diminish wildlife populations and damage salmon spawning streams; they argue that existing roads are sufficient. <br />
Native Corporation Lands were designated by the Alaska Native Claims Settlement Act of 1971 (ANCSA). This Act conveyed approximately 44,000,000 acres (180,000 km2) of Federal land in Alaska to private native corporations which were created under the ANCSA. 632,000 acres (2,560 km2) of those lands were hand-picked old growth areas of the Tongass and are still surrounded by public National Forest land. These lands are now private and under the management of Sealaska, one of the native regional corporations created under the ANCSA. <br />
Transference of public National Forest land to a privately owned corporation removes it from protection by Federal law and allows the owners to use the land in whatever way they see fit without regard to the effects of the use on surrounding lands and ecosystems. This fact has caused much controversy involving the business interests of Native Regional Corporations and the personal interests of local Native and non-Native residents of Southeastern Alaska.
    Alaska-Tongass-National-Forest2.jpg
  • The most common predator of harbor seals is the killer whale. Other predators include sharks, sea lions, and land predators such as wolves, bears and coyotes. Since implementation of the Marine Mammal Protection Act in 1972, hunting has been restricted to Alaska Natives. Harbor seals play a crucial role in the culture and diet of Alaska Natives; the annual subsistence harvest of harbor seals in Alaska is about1,800 to 2,900 animals, with fewer seals harvested in recent years. The harbor seal's ability to damage or remove salmon from gillnets has caused conflicts between seals and commercial fishers in Alaska. This behavior creates economic losses for fishers and often fosters an antagonistic attitude toward seals. The Copper River Delta, the mouths of the Stikine and Taku rivers, and portions of Bristol Bay are areas with notable harbor seal-fishery conflicts. Sometimes seals are caught and killed or injured in fishing gear, primarily in gillnets and occasionally in crab pots.
    Alaska-harbour-seal4.jpg
  • Humpback whales (Megaptera novaeanglia) cooperative feeding using a bubble net, near Kupreanof Island, Stephen’s Passage, Southeast Alaska, USA.<br />
This photo was taken near the Tlingit town of Kake on Kupreanof Island and illustrates the problems of the practice of clear-cut logging that persisted during the 1980s and 90s when I was based in Southeast Alaska. The extent of clear-cutting was much worse around native communities because the Alaska Native Claims Settlement Act of 1971 (ANCSA) awarded approximately 148,500,000 acres (601,000 km2) of Federal land in Alaska to private native corporations which were created under ANCSA. Transference of public National Forest land to a privately owned corporation removes it from protection by Federal law and allows the owners to use the land in whatever way they see fit without regard to the effects of the use on surrounding lands and ecosystems. This fact has caused much controversy involving the business interests of Native Regional Corporations and the personal interests of local Natives and non-Native residents of Southeastern Alaska, such as subsistence hunting and tourism.
    Humpback whales-6-2.tif
  • Reproductively mature male sea lions aggregate on traditional rookeries in May, usually on beaches on isolated islands. A week or so later, adult females arrive, accompanied occasionally by sexually immature offspring, and form fluid aggregations throughout the rookery. Steller sea lions are polygamous but they do not coerce individual females into harems but control spatial territories among which females freely move about. Pregnant females give birth soon after arriving on a rookery, and copulation generally occurs one to two weeks after giving birth, but the fertilized egg does not become implanted in the uterus until the autumn. After about a week of nursing, females start taking increasingly longer foraging trips, leaving the pups behind until in late summer when they both leave the rookery. Males fast until August, often without returning to the water, after which time the rookeries break up and most animals leave for the open seas and disperse throughout their range.<br />
Steller sea lions are predated upon by orcas and I actually witnessed the death of one bull that had become quite attached to me. It had been showing so much interest in me and it even raised its head out of the water right in front of me to have a good look with its bulging eyes. A short while later I heard a commotion in the distance and saw that a pod of transient orcas had arrived on the scene and were systematically charging the sea lion and thrashing it with their flukes. It was a difficult event to witness, especially whenever the big bull re-appeared on the surface gasping for breath. It took the orcas about 15 minutes to finally kill it and not long after that they were attacking some humpback whales that had strayed onto the scene. It was an exhilarating experience to be paddling my kayak so close to a pod of orcas engaged in a hunt, but they showed no interest in me. It was one of those occasions when I wished that I’d had someone else with me to witness such an amazing spectacle.
    Alaska-Steller-sealion1.jpg
  • Reproductively mature male sea lions aggregate on traditional rookeries in May, usually on beaches on isolated islands. A week or so later, adult females arrive, accompanied occasionally by sexually immature offspring, and form fluid aggregations throughout the rookery. Steller sea lions are polygamous but they do not coerce individual females into harems but control spatial territories among which females freely move about. Pregnant females give birth soon after arriving on a rookery, and copulation generally occurs one to two weeks after giving birth, but the fertilized egg does not become implanted in the uterus until the autumn. After about a week of nursing, females start taking increasingly longer foraging trips, leaving the pups behind until in late summer when they both leave the rookery. Males fast until August, often without returning to the water, after which time the rookeries break up and most animals leave for the open seas and disperse throughout their range.<br />
Steller sea lions are predated upon by orcas and I actually witnessed the death of one bull that had become quite attached to me. It had been showing so much interest in me and it even raised its head out of the water right in front of me to have a good look with its bulging eyes. A short while later I heard a commotion in the distance and saw that a pod of transient orcas had arrived on the scene and were systematically charging the sea lion and thrashing it with their flukes. It was a difficult event to witness, especially whenever the big bull re-appeared on the surface gasping for breath. It took the orcas about 15 minutes to finally kill it and not long after that they were attacking some humpback whales that had strayed onto the scene. It was an exhilarating experience to be paddling my kayak so close to a pod of orcas engaged in a hunt, but they showed no interest in me. It was one of those occasions when I wished that I’d had someone else with me to witness such an amazing spectacle.
    wildlife-3.tif
  • Reproductively mature male sea lions aggregate on traditional rookeries in May, usually on beaches on isolated islands. A week or so later, adult females arrive, accompanied occasionally by sexually immature offspring, and form fluid aggregations throughout the rookery. Steller sea lions are polygamous but they do not coerce individual females into harems but control spatial territories among which females freely move about. Pregnant females give birth soon after arriving on a rookery, and copulation generally occurs one to two weeks after giving birth, but the fertilized egg does not become implanted in the uterus until the autumn. After about a week of nursing, females start taking increasingly longer foraging trips, leaving the pups behind until in late summer when they both leave the rookery. Males fast until August, often without returning to the water, after which time the rookeries break up and most animals leave for the open seas and disperse throughout their range.<br />
Steller sea lions are predated upon by orcas and I actually witnessed the death of one bull that had become quite attached to me. It had been showing so much interest in me and it even raised its head out of the water right in front of me to have a good look with its bulging eyes. A short while later I heard a commotion in the distance and saw that a pod of transient orcas had arrived on the scene and were systematically charging the sea lion and thrashing it with their flukes. It was a difficult event to witness, especially whenever the big bull re-appeared on the surface gasping for breath. It took the orcas about 15 minutes to finally kill it and not long after that they were attacking some humpback whales that had strayed onto the scene. It was an exhilarating experience to be paddling my kayak so close to a pod of orcas engaged in a hunt, but they showed no interest in me. It was one of those occasions when I wished that I’d had someone else with me to witness such an amazing spectacle.
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