Safari Ltd Coral Reef ToobSafari Ltd Coral Reef Toob 11 pieces per Toob. Often referred to as the rain forests of the sea, coral reefs are some of the more varied and impressive ecosystems on planet Earth. Although they account for only . 1% of ocean surfaces worldwide, they're home to a staggering amount of different marine species. Because they're found in shallow waters where there's lots of sunlight, coral reefs are a popular tourism attraction in tropical areas and