Staghorn corals are one of the most important reef building corals. Hard corals build reefs by growing on the stony skeletons of previous coral colonies. The reef is made from the limestone cases made by coral polyps extracting calcium from... Click to continue>
Boulder Coral grows into a huge ball shape. They form an important part of the Great Barrier Reef structure. Porites may live more than 800 years old. Click to continue>