Life on the ocean is full of surprises, but few compare to encountering the biggest fish on Earth. During day 86 of their adventure living entirely from the sea, the crew discovers a massive ocean ...

Twenty years on, relive the iconic scene from Sir David Attenborough's Planet Earth that changed our understanding of how polar bears adapt to survive.

Viewing volcanoes, snorkeling with manta rays, taking ghost tours and more are Hawaii experiences best enjoyed after dark.

Mapping our coasts is critical for the conservation of coral reefs, atolls, mangroves, islands, estuaries, seagrass beds and beaches.

Biological matter left behind in the water allows us to follow these animals without ever setting eyes on them.

To avoid predators and the relentless sun, the sandfish opts for subterranean travel, plunging head-first into the ground and navigating the safer and cooler subsurface. But, unlike a mole or prairie ...