Coral reefs are one of ... that structure this diverse ecosystem? Corals are members of the phylum Cnidaria, a diverse group that includes jellyfish, hydroids, and sea anemones.

Beneath the ocean’s waves, coral reefs reign as ancient, complex and living ecosystems that are often called the rainforests of the sea. Like tropical rainforests, coral reefs provide life and ...

A third of the planet’s coral reef ecosystems are at risk of being damaged by warming sea temperatures and subsequent coral bleaching. Is it possible for these sea creatures to survive and adapt?