Fish rank as the most diverse group of vertebrates in the world. Scientists recognize over 37,000 distinct species, with many more waiting to be discovered. Most fish fall into the ray-finned group of ...

Fact checked by Nick Blackmer Krill oil is a fish oil alternative made from tiny shrimp-like crustaceans, a dietary staple ...

Krill oil and fish oil are popular dietary supplements containing omega-3. ... However, while research has shown eating whole fish can have heart-protecting benefits, ...

Humpback whales are filter feeders and eat small fish and crustaceans, mostly krill. They herd and disorient their prey using several methods. In one, called “bubble-net feeding, ...

The animals we best know as fish food help to store millions of tons of carbon in the Southern Ocean around Antarctica.

Humpback whales blow spiraling circles of bubbles to create underwater nets for their tiny prey, krill. Hunter Warick/Alaska Whale Foundation, images collected under NMFS Permit #19703 hide caption ...

Wild-caught fish eat a natural diet of plankton, krill and other small organisms. While farm-raised fish are fed a high-protein, high-fat diet. Farmed fish may be paler in color, ...