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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]
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 ...
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.
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 ...
Blue whales can grow up to 100 feet long and weigh about 200 tons — that makes them ... acidification of the ocean and other factors are making the whales' main food source, krill, harder to ...
As the group circles a school of small fish such as salmon, krill, or herring, they use a team effort to disorient and corral the fish into a "net" of bubbles. [4] One whale will typically begin to exhale out of their blowhole at the school of fish to begin the process. [4] More whales will then blow bubbles while continuing to circle their prey.
Tiny but bountiful, Antarctic krill make up one of the planet’s largest biomasses, nourishing everything from fish to giant humpback whales. Takeaways from AP's reporting on Antarctica's ...
Rorquals (/ ˈ r ɔːr k w əl z /) are the largest group of baleen whales, comprising the family Balaenopteridae, which contains nine extant species in two genera.They include the largest known animal that has ever lived, the blue whale, which can reach 180 tonnes (200 short tons), and the fin whale, which reaches 120 tonnes (130 short tons); even the smallest of the group, the northern minke ...