Krill

Waddling over the rocks, legions of penguins hurl themselves into the icy waters of Antarctica, foraging to feed their young.

The advantage of advertising on the world's largest social network was that it could do something television ads could not - specifically target ads at users.

Blue whales off the US west coast like to feed in areas that are heavily used as shipping lanes, a practice that puts their survival at risk, researchers said Wednesday.

Waddling over the rocks, legions of penguins hurl themselves into the icy waters of Antarctica, foraging to feed their young.

The advantage of advertising on the world's largest social network was that it could do something television ads could not - specifically target ads at users.

Blue whales off the US west coast like to feed in areas that are heavily used as shipping lanes, a practice that puts their survival at risk, researchers said Wednesday.