Somehow, a large orange octopus has been riding a mako shark off the coast of New Zealand. Researchers are mystified.

What animal has the longest gestation period? From salamanders to elephants, here’s how long it can take to make a baby.

Clicklike noises made by a small species of shark represent the first instance of a shark actively producing sound ...

“We could see these tentacles moving,” she added in a March 20 interview with The New York Times.

With documented swimming speeds of up to 46 miles per hour, mako sharks represent the world’s fastest elasmobranch species.