10 animals at risk of extinction from the Gulf oil spill
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Elkhorn coral
The amount of Elkhorn coral in U.S. waters is already dangerously low. It is one of the most important reef-building corals in the Caribbean and Gulf.
The species spawns each year within a few days of the August full moon, and in a normal year only 1 percent of those spawn survive their first few weeks of life. If exposed to oil, the entire year's spawn could potentially be wiped out.
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