More Biodiversity

The Ocean Blog

Tropical coral reefs—found in warm, clear, shallow waters—support a rich diversity of marine life, such as these sea bass in the Red Sea. Learn more in the Ocean Portal's Coral Reefs section .
Thousands of seamounts—most of them undersea volcanoes—tower above the muddy seafloor. They provide something hard to come by in the deep ocean : a solid surface to cling to. This photo gallery shows...
Squids, octopuses and cuttlefish, such as this Australian Giant Cuttlefish ( Sepia apama ), compose just one group of animals that call seagrass beds home. Clams and worms bury themselves in the mud...
Subscribe to Biodiversity