black coral Directory References Discover 6 Wars of Independence What Do Eggs Have to Do with Easter? Why Is Ireland Two Countries? Timeline of the American Civil Rights Movement 7 of the World’s Most Dangerous Festivals Where Is “Old Zealand”? 7 of the World’s Deadliest Shipwrecks Contents black coral invertebrate Ask the Chatbot a Question Ask the Chatbot a Question Learn about this topic in these articles:classification In coral…Scleractinia) number about 1,000 species; black corals and thorny corals (Antipatharia), about 100 species; horny corals, or gorgonians (Gorgonacea), about 1,200 species; and blue corals (Coenothecalia), one living species.Read More