Search
A coral reef covered by silt and sand in the Western Pacific Ocean.
Photo

Coral Reef Covered by Silt and Sand

View Image
Sea bass flock to a tropical coral reef in the Red Sea.
Photo

Coral Reef Ecosystem, Red Sea

View Image
Corals, sponges, and algae are the major components of most coral reef communities as shown in this picture.
Photo

Coral Reef on Gangga Island, Indonesia

View Image
These corals are dead—smothered in sediments and overgrown with algae.
Photo

Dead Coral Overgrown with Algae

View Image
Shallow water coral reefs straddle the equator worldwide.
Photo

Global Distribution of Shallow Coral Reef Ecosystems

View Image
Colorful corals and brittlestars on Manning Seamount off the New England coast.
Photo

Manning Seamount Deep Coral Communities

View Image
Compare the healthy coral on the left with the bleached coral on the right.
Photo

Bleached Corals, Pacific Ocean

View Image
A diver on the reef near Moorea collects samples.
Photo

Research Diver in Moorea

View Image
What is coral? The answer is coral is an animal. This cutaway diagram of a coral polyp shows the location of its photosynthetic algae, or zooxanthellae, which coral needs to survive.
Photo

What Is Coral? A Coral Polyp and Zooxanthellae

View Image
This species of bamboo coral, discovered in 2004 in the Pacific Northwest, has unusually long and impressive tentacles.
Photo

New Bamboo Coral

View Image
The Belize Barrier Reef Reserve System consists of the largest barrier reef in the northern hemisphere, offshore atolls, and several hundred sand cays, mangrove forests, coastal lagoons, and estuaries. The system's seven sites illustrate the evolutionary h
Article

Charles Darwin's Ocean Upwelling

Read the Full Article
a highly bleached coral reef
Photo

Bleached

View Image