Whales, for example, eat mostly shrimp-like krill and fish, he said.
The albatross also eat krill, fish and sometimes garbage from ships, according to the British study.
The whales that eat krill do not have teeth.
They eat Antarctic krill, fish, and small squid.
They are also found south to Brazil and north to New York and eat krill.
However, Japanese do eat krill, and krill is also used in large quantities by fish farms as feed.
Penguins eat krill, fish, squid, and other small animals from the ocean, which they catch.
The species feeds by diving in deep waters, eating krill and a variety of small marine animals.
Wild salmon get these carotenoids from eating krill and other tiny shellfish.
The King Penguin eats krill, small fish, squid, and plankton.