Krill and shrimp may have vaguely similar body shapes, but they're separated by a world of differences in terms of anatomy ...

Whales are a group of mammals that live in oceans. They include some of the largest animals on Earth. The blue whale is the ...

Climate change is also driving penguins to colonize new areas, or to stay in regions longer than they normally would, ...

Blue whales can eat as much as 6 tons (5.4 metric tons) — about the same weight as an African elephant — of krill every day. Blue whales are massive even at birth. When they are born ...

It devastated populations of krill, anchovies and sardines that the cetaceans eat. “The whales all exhibited the lowest levels of song when conditions were the worst,” but vocalized more when ...

When krill numbers fell again, so did the whales’ songs. Unlike blue whales, humpback whales can also eat anchovies and sardines, and their choruses returned when there was a population ...

Humpback whales, despite their gargantuan size, eat very small prey like krill and plankton. To sustain their massive bodies, however, they must consume a lot of this food — up to 3,000 pounds ...