The ballista spider builds sophisticated spring-loaded snares to catapult its prey.

An orca drags and spins a sea turtle, as if trying to show her baby how to hunt. Researchers say it might be an example of teaching.

A decade after they vanished from the ocean, the discovery of this lost colony of sunflower sea stars offers new hope for California's kelp forests.

An endangered sea turtle named Lucky washed up in Nova Scotia last year. Scientists are trying to solve the mystery of why she and other turtles are traveling so far north.

Scientists created the first-ever map of this vast underground fungal network and found it could stretch to the sun and back more than a billion times.

Scientists think the killer whales might be doing it for fun.