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Krill are also used for human consumption in several countries. They are known as okiami (オキアミ) in Japan and as camarones in Spain and the Philippines. In the Philippines, they are also called alamang and are used to make a salty paste called bagoong. Krill are also the main prey of baleen whales, including the blue whale.
The blue whale's diet consists almost exclusively of krill. [34] Blue whales capture krill through lunge feeding; they swim towards them at high speeds as they open their mouths up to 80°. [34] [69] They may engulf 220 metric tons (220 long tons; 240 short tons) of water at one time. [73]
Whales feed at deeper levels in the ocean where krill is found, but return regularly to the surface to breathe. There whales defecate a liquid rich in nitrogen and iron. Instead of sinking, the liquid stays at the surface where phytoplankton consume it. In the Gulf of Maine, the whale pump provides more nitrogen than the rivers. [30]
Blue whales eat almost 9,000 pounds of krill daily, and when it's their feeding season, they eat up to 40 million krill a day. Treehugger also shared this cool fact, "Blue whales, in fact, are the ...
The heart of a blue whale, which can weigh in excess of 1,300 lbs (590 kg) and is the size of a small car. ... They eat 4 to 6 tons of krill a day. As an adult, they can grow up to a 110 ft (33 m ...
In general, blue whale populations migrate between their summer feeding areas near the poles and their winter breeding grounds near the tropics. There is also evidence of year-round residencies, and partial or age/sex-based migration. Blue whales are filter feeders; their diet consists almost exclusively of krill. They are generally solitary or ...
A 2022 study found that filter-feeding mammals off the California coast such as blue whales eat massive amounts of microplastics, which they mistake for krill. On the U.S. East Coast, Sperm whales ...
The whale then pushes the water out, and animals such as krill are filtered by the baleen and remain as a food source for the whale. Baleen is similar to bristles and consists of keratin, the same substance found in human fingernails, skin and hair. Baleen is a skin derivative. Some whales, such as the bowhead whale, have