Desmophyllum is a genus of cnidarians belonging to the family Caryophylliidae.

The genus has cosmopolitan distribution.

D. dianthus is one of the most common deepwater corals. It lives at depths reaching 2,000 meters, in cold, dark water. Its polyps are solitary, reproducing only sexually, with sperm densities of less than 500/ml. The corals eat plankton and tiny shrimp with their stinging tentacles. They are found throughout the world’s oceans and provide habitat for deepwater fish and other species.

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