From deep-sea sponges to ancient tortoises, the longest-living animals can survive for centuries, even pausing aging.

Before you get in the water this summer, take a peek at the many ocean mysteries lurking below Dive deep into ocean mysteries ...

Ocean Ramsey, a trained shark diver, spoke with PEOPLE exclusively about her unimaginably-close encounters with the apex ...

Palestinian human rights lawyer Raji Sourani told The Guardian: Gaza is becoming the graveyard of international law. The ...

The critically endangered fish, discovered in the commercial aquarium trade, can only be found in one forest swamp on Sumatra, Indonesia.

Meet Mosura fentoni, a bizarre 506-million-year-old "sea-moth" with three eyes, claws, and an abdomen full of gills.