Without sea stars, an explosion of sea urchins knocked the ecosystem off balance. Now scientists are racing to breed a new generation of their predators. An ochre sea star tries to blend into a kelp ...

Heavier rains are triggering regulatory pauses on harvesting oysters and clams—and putting fishermen out of work.

What is a hermit crab? There are over 800 species of hermit crabs worldwide, and almost all are ocean dwellers—though people are likely most familiar with the dozen semi-terrestrial species, called ...