In the Company of Polar Bears

Polar bears are magnificent creatures and one photographer made it their work to capture them on film. The photographer traveled to the cold depths of the globe to find the white bears. Learn more about this polar bear venture.

A polar bear stands on its hind legs and waves at the camera

Beneath the Fin

Sharks are among the ocean’s oldest survivors. They have cruised through Earth’s seas for more than 450 million years — long before the first trees grew or Saturn formed its rings.

Silky sharks in Cuba’s Jardines de la Reina

Parrotfish: Grazers of the Reef

Colorful parrotfish may be vital to a coral reef’s survival. Because of their specific feeding habits — and what they eat — they keep algae down.

Colorful parrotfish are closely packed in a tank

The Blue Desert Conundrum

Where we encounter marine megafauna, we see only a tiny slice of their habitats and lives, which rarely includes feeding. These animals may travel thousands of feet vertically or migrate a few thousand miles horizontally to meet their nutritional needs. Some of them — sperm whales, for example — must do both: descend to depths of up to a mile or more to feast on aggregations of squid and roam across large swaths of the Pacific to avoid depleting their food resources in any one area.

The Evolutionary Puzzle of Fish Colors

The wild, psychedelic colors of reef fish are often what first enraptures divers. Is there an evolutionary explanation for why small, tasty animals adorn themselves in vivid colors instead of camouflaging themselves from hungry predators?

Milletseed butterflyfish

Marine Biogeography

Marine biodiversity is vast and each river, lake, ocean and reef has different life. But what underlies regional diversities in marine biodiversity? How can one place support more life compared to others? Learn more about this kind of biodiversity.

An outcrop of colorful coral and a diver swims in the background

Going Up

Every night as the sun slips below the horizon, countless aquatic creatures begin migrating up from the deep in what is quite possibly the greatest show on Earth. Seeking nourishment […]

Orcas in Norway

Learn how orcas in Norway adapt their hunting skills to thrive in diverse ecosystems and follow the herring migration.

A freediver photographs an orca

Diving in a Drop of Water

Plankton are fascinating critters and are critical in keeping our oceans healthy. There is wide diversity amongst plankton. Learn more about plankton.

A blue larval bristle worm has creepy legs