The state gem of Hawaii is black coral, but hold on to your hula skirt, because this jewel’s no rock! Black coral actually comes from the skeletons of live animals. Related to jellyfish, black coral is made up of thousands of tiny polyps. The polyps shoot out poison-filled microscopic barbs to harpoon, kill and swallow plankton.
Black coral isn’t black. The name refers to the color of the skeletons, which are built from tough protein. The living colonies are yellow, green and orange. Black corals are colonial cnidarians in the order Antipatharia that are most closely related to gorgonians and stony corals. There are over 200 described species.
They are found throughout the world’s oceans, but are most common in tropical deep water habitats from 30- 80 m depth...
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