It is estimated to take 1,000 kg (2,200 lbs.) Rorqual are Baleen whales and are referred to as ‘true whales’. Crazy about roller coasters? Humpback whales, Bryde's whales, and minke whales prey mostly on krill and small schooling fishes. Minke whales are one of the smallest species of baleen whales and grow to nearly 9 metres long and about 10 tonnes in weight. DIET AND BALEEN Humpback whales (like all baleen whales) are seasonal feeders and carnivores that filter feed tiny crustaceans (krill - mainly Euphausia superba, copepods, etc. Hear animal sounds for animals like anteaters, dolphins, frogs and more. Scientists estimate that large baleen whales eat about 4% of their body weight each day during the feeding season. Some of the biggest individuals may eat up to 6 tons of krill in 1 day. Krill (a family of small, shrimplike crustaceans) and copepods are major components of a right whale's diet. Zooplankton is caught in the finely fringed baleen mat; water flows through the baleen and out the sides of the mouth. The krill, schooling fish and plankton that make up a baleen whale's diet are abundant in colder waters in the summer, but they disappear in the winter. Curiously, most gray whales appear to be "right-handed". There are four different families of baleen whale, and although they all filter feed, they each do it in a different way. These plates are very long and narrow, and hang down in the in the whale's mouth. Like wolves, polar bears and other land predators, they track and stalk … Winter daily feeding rate is only about 0.4% of body weight. Rorquals may feed at the surface or deeper in the water. A gray whale rolls on its side and sucks in water, mud, and bottom-dwelling invertebrates, which are abundant in ocean sediments. We also assessed if carbon isotopes were useful for examining blue whale diet and movement patterns in the northeast Pacific, however, we expected little variation in δ13C values of prey among foraging zones based on previous studies [58–64]. Minke whales in the northern hemisphere prey mostly on small schooling fishes; those in the southern hemisphere prey mostly on krill. While scooping up large quantities of plankton, krill and small fish, the whales take on gallons of water. What does it take to sustain a whale shark? Females are larger than males. The whales' mouths are very large. A baleen whale probably uses its huge tongue for moving food trapped inside the baleen, for squeezing water out of the mouth, and for swallowing. Fin whales migrate around the oceans in search of food, likely spending their summers in higher latitudes. In the North Pacific and North Atlantic Oceans they also eat squids and small schooling fishes. Krill are small, shrimp-like organisms that are part of the plankton. Iceland is the perfect habitat for whales and dolphins, best seen on an exciting widllife tour. Most baleen whales spend about four to six months in the summer feeding intensively in high-latitude, productive waters. Are you wild about whales? A blue whale eats up to 3,600 kg (8,000 lbs.) First, close living and extinct relatives of baleen whales have teeth. Some, such as the Blue and Fin whale or the three Right whale species, are close genetic relatives. Browse our extensive collection of zoological career infobooks including animal training, animal rescue and rehabilitation and zoo careers. Gray whales gain about 16% to 30% of their total body weight during a feeding season. These plates are made from keratin, the same material as fingernails, and form a fringe or curtain at the opening of the mouth. 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