More than 40% of extant large freshwater animals (megafauna), including carp, salmonids, crocodilians, turtles, beavers, and hippopotamuses, have been deliberately introduced outside their natural ...

Tourists were stunned when a pair of orcas tried to hunt a gentoo penguin alongside their ship. Here’s what happened next.

Our quest for monster fish spans the globe: Australia's Giant Trevally, Thailand's remote waters, Fiji's sea-mounts, and the North Atlantic's giant Bluefin Tuna.