So-called Mushroom Corals derive their name from their distinctive rounded shape. Unlike most other coral that build a solid limestone skeleton these are solitary and are formed by one giant polyp. They sit on the bottom unattached to the seabed, usually in the sheltered waters of pools or lagoons. They feed at night, with large tentacles emerging to cover the surface and ready to feed on plankton in the seawater.
Widespread across the Indian Ocean and into the west Pacific Ocean.
Queensland Museum's Find out about... is proudly supported by the Thyne Reid Foundation and the Tim Fairfax Family Foundation.