Watch a sea anemone defend itself against a predatory starfish in this video. The sea anemone detects the starfish nearby, ...

Learn more about the juvenile fish that carry sea anemones like weapons or shields to ward off predators.

Native to the northern hemisphere, plumose anemones have spread across Chilean Patagonia. Scientists estimate that it was likely introduced in the late 20th century via ship ballast water. The exotic ...