What is Coral Bleaching?

Coral reefs are one of the most spectacular ecosystems on Earth. They are built by colonies of tiny animals found in marine waters, and although they cover less than 0.1% of the world’s ocean surface, they are home for more than 25% of all marine species. Unfortunately, coral reefs are becoming susceptible to “bleaching,” which occurs when the symbiotic organisms that live within the coral animal and provide most of their food are expelled, usually as a result of rising water temperatures. This leaves the coral in a sickened state, from which they can die. As the climate warms and ocean waters heat up, coral bleaching is becoming more frequent and the long term affects on coral reefs are unknown. Through the direct observation of coral reefs we can aid scientists in their research – helping to better understand and protect these beautiful and important ecosystems.