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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 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
To catch prey, they widely open their lower jaw — almost 90° — swim through a swarm gulping, while lowering their tongue so that the head's ventral grooves expand and vastly increase the amount of water taken in. [16] Baleen whales typically eat krill in polar or subpolar waters during summers, but can also take schooling fish, especially ...
The whales eat amphipod crustaceans like tiny shrimp and worms, which they consume by sucking up water and sediment from the seafloor, where such creatures live, then using their baleens to filter ...
In 2010, researchers found whales carry nutrients from the depths of the ocean back to the surface using a process they called the whale pump. [29] 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.
Whales feed at deeper levels where krill is found, and their fecal matter, rich in iron, rises to the surface. This action enhances phytoplankton productivity and supports fish populations. Whales, along with krill, form a positive feedback loop, where their populations contribute to the recycling of iron, further boosting phytoplankton growth.
The biggest creatures on Earth consume a lot of tiny pieces of plastic.
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 ...