Imagine diving into a crystal-clear ocean and suddenly coming face-to-face with a bustling metropolis built not by humans, ...

Pennekamp State Park—the nation's first coral-reef santcuary—protects a thriving ecosystem beneath the waves ...

Found in coral reefs and tidal pools ... The mythical-looking cannonball jellyfish truly are a sight to behold, especially on full moon days when they are often spotted grouped together, swimming ...

A close relative of coral and jellyfish, anemones are stinging polyps that spend most of their time attached to rocks on the sea bottom or on coral reefs waiting for fish to pass close enough to ...

Coral reefs are one of the most diverse ecosystems ... Corals are members of the phylum Cnidaria, a diverse group that includes jellyfish, hydroids, and sea anemones. Cnidarians have a simple ...