Sentences with phrase «whales feeding on»

While we haven't observed an attack, we've observed the killer whales feeding on 3 different gray whale calves on different days and in different locations.

Jeremy A. Goldbogen et al (2013)-- Underwater acrobatics by the world's largest predator: 360 ° rolling manoeuvres by lunge - feeding blue whales In this study we measured the three dimensional kinematics and foraging behaviour of blue whales feeding on krill, using suction - cup attached multi-sensor tags.

«Humpback whales feeding on fish showed more variability in their lunge strategies, and, despite prey being much faster, actually lunge more slowly,» says Dr Goldbogen.

Grey whales feed on the seafloor at depths of up to 50 metres, and rely heavily on the shallow regions in Alaska's Bering Sea for food.

Regardless, it is known that such sperm whales feed on deepwater squid that may be impacted by plumes of dispersed oil.

Humpback whales feed on hatchery - released juvenile salmon.

Searching under rocks for crabs, watching humpback whales feed on a school of small fish, or being surprised as a harbor seal pops up right next to their kayak are all memories children cherish for a lifetime.

Despite their massive size, the whales feed on tiny shrimp - like crustaceans called krill, consuming as many as 40 million krill per day.

Knowing the biota food source relationship to ice and what whales fed on what biota, the researchers were able to take the position of the whale kills from the admiralty records and map the decadal long position of the southern ice coverage.

Not exact matches

This year, shareholders will have an opportunity to weigh in on the eventual changes amidst a backdrop of continued multi-billion dollar settlements for allegations of misconduct regarding a litany of issues (including the «London Whale» trading fiasco, evidence of collusion to rig CDS and foreign exchange markets, and continued mortgage - backed security litigation), along with the Fed and FDIC's decision to label the Company's «living will» proposal as «not credible.»

In my typical gluttonous - whale fashion, I like to slather like 9 tablespoons (hardly an exaggeration) of salted grass - fed butter on a warm slice of this banana bread.

Over the last two weeks, the poignant and dramatic story of two beluga whale calves born at the Shedd Aquarium has focused attention on the crucial but sometimes complicated task of mothers breast - feeding their infants.

These whales expend much less energy on feeding than their toothed counterparts because they filter all their food, which makes them more efficient and allows them to grow larger than toothed whales.

Both are greyer than the north - east Pacific transient killer whales living off Alaska, which feed on marine mammals, including dolphins.

The museum ran a whale - watching boat that plied the waters between Long Beach and the Channel Islands, searching for gray whales on their way from their feeding grounds in the Arctic to their calving shoals in Baja California Sur in Mexico.

The new research is the first to document handedness in blue whales and the first evidence of a marine mammal favoring a different side of its body depending on feeding depth, the researchers say.

Meanwhile, populations of certain species of Antarctic penguins such as the Adélie are dwindling, and Antarctic krill — the tiny crustaceans that feed whales and many other animals — are also on the decline.

Researchers at the Cascadia Research Collective in Olympia, Washington, tracked seven whales — which they recognized by the markings on their tail flukes — from their summer feeding grounds in the Antarctic Ocean to their winter breeding grounds off the Pacific coast of Central America.

Kelp Gull harassment — they feed on skin and blubber pecked from the backs of living whales — has also increased in recent years, implicating the wounding as a potential contributing cause of the increased mortality.

Researchers now classify those killer whales into three groups: «resident» orcas that feed exclusively on fish, «transient» orcas that usually eat marine mammals, and «offshore» orcas that are so mysterious no one knows what they eat.

Overall, the study's data from mitochondrial DNA — different from nuclear DNA in that it helps scientists trace maternal lineages — reveal that population structure in humpback whales is largely driven by female whales that return annually to the same breeding grounds and by the early experience of calves that accompany their mothers on their first round - trip migration to the feeding grounds.

Humpback whales commonly feed on large prey shoals by accelerating to high speeds and «lunging» at their prey, engulfing a large volume of water and filtering out the prey through their filter feeders.

The research traces its origins to one summer day in 2007, when a worker on a Maersk Oil platform in the Al Shaheen oil field off the coast of Qatar saw a surprising sight: a group of roughly 100 whale sharks feeding near the surface.

But the experts doubt that future analysis of the Thames whale will show high levels of pollutants as this species generally feeds on animals near the bottom of the food chain — such as squid.

This «free» meal is too good to pass up for whale sharks, which can be seen feeding on the baitfish around the bagans all year round.

«We had no idea what they were even feeding on in the Atlantic, but eventually it has became more and more clear that minke whales are the predominant prey source for certain killer whales in our area,» explained Stevens, who published a field guide to whales and dolphins in Atlantic Canada in 2013.

Then they divided the cetaceans according to their dietary preferences: filter feeders, such as the blue whales, that gulp down huge quantities of krill; cephalopod specialists, such as sperm whales, that dive to great depths to feed on squid; and generalist fish eaters, such as bottlenose dolphins.

He proposes that the diversity must have narrowed in the course of whale evolution as mtDNA «hitchhiked» on the success of behaviors passed from older females to calves, such as feeding techniques, methods for fending off predators, and baby - sitting.

The Crittercam video showed that sometimes a whale's rostrum (a snoutlike projection) came in contact with the seafloor (which explains scarring seen on some whales), kicking up sand in clouds, and that the whales» ventral pleats expanded, indicating that they were feeding.

If you go on a whale watching tour, you might be lucky enough to catch humpback whales feeding.

Although baleen whales are carnivores, filter - feeding on fish, krill, and other crustaceans, some of the microbes in their bellies look more like those of a vegetarian, microbiologists reported yesterday in Nature Communications.

The whales are «40 feet long and they're feeding on fish that are the size of my finger,» says Chenoweth, of the Juneau fisheries center of University of Alaska Fairbanks.

New Caledonian humpback whales stop for days on end at underwater mountains when they migrate between breeding and feeding grounds.

They also prefer to feed on the rich blubber of whales and seals, so whale sharks might be less appetising to them.

The authors suspect that the presence of big teeth in fossil sperm whales may suggest that they were feeding on large prey, perhaps marine mammals such as seals and other smaller whales as opposed to modern sperm whales, which feed primarily on squid, hardly using their teeth for chewing.

As such, it provides the first real glimpse into what baleen whales were like before they evolved their feeding filters.Measuring about 9 to 11 feet long, the specimen was the size of a bottlenose dolphin, with huge eyes that took up a quarter of its head.Instead of echolocating, it most likely depended on keen underwater vision and sharp hearing to track fish and small sharks, which it would then tear apart and shred with its 1.4 - inch - long serrated teeth.

New NOAA - led research on tagged humpback whales in Stellwagen Bank National Marine Sanctuary reveals a variety of previously unknown feeding techniques along the seafloor.

But the warming Arctic appears to have benefits for some marine species that feed on phytoplankton, including gray whales.

Friedlaender says his research casts doubt on Japan's scientific whaling program, which has purported to study minke feeding biology and has killed between 240 and 860 of the animals every year since 1988.

And they examined the wear - patterns on the animals» teeth; killer whales that feed heavily on herring have badly worn teeth.

«When whales are feeding on krill, they're really high lipids, lots of fat, so it sort of clumps together and floats at the surface.

Before this study, scientists had good data on lunge feeding in large and medium, but not small, baleen whales.

Instead, Fitzgerald contends, the whale depended on suction feeding: By dropping its tongue and lower jaw, it pulled in water and slurped prey such as large fish or squid into its toothy maw.

Whale shark diets vary both seasonally and geographically, but they are thought to feed mainly on zooplankton as well as algae, small fishes, fish eggs, and cephalopods.

Research shows that humpback diets reflect their surroundings, with the truck - sized whales filter - feeding on vast amounts of krill when cold upwelling waters prevail, but switching to schooling fish such as anchovies when warmer waters take over and the fish grow abundant.

A young male whale shark feeds on small pieces of fish that escape through the mesh of the fishermen's nets.

It feeds entirely on tiny animals called plankton, as do humpback whales.

These small crustaceans are important organisms of the zooplankton, particularly as food for baleen whales, Mantas, whale sharks, Crabeater seals and other seals, and a few seabird species that feed almost exclusively on them.

At the same time, baleen whale populations in the Southern Ocean, which feed primarily on krill, are recovering from past exploitation.

This had allowed jellyfish - like creatures called salps, which find it easier to feed on the small cells, to start to replace shrimp - like krill, on which whales depend for food.