Leiopathes glaberrima is a species of black coral of the order Antipatharia found in the northern Atlantic Ocean and the Mediterranean Seas deep water habitats.

[5] It is also present in the Mediterranean Sea off the coast of Malta at depths of between 250 and 400 m (820 and 1,310 ft) where it constitutes a dense coral forest which greatly enhances the biodiversity of the area.

The ecosystem is easily damaged by deep water fishing activities including trammel nets and long lines which break the colonies or get tangled in them.

[6] Although the feeding habits of this species have not been studied, black corals usually grow in areas with steady currents and are fan-shaped, orientating themselves at right angles to the flow.

[5] More recently, another Hawaiian specimen of Leiopathes glaberrima, the central portion of a basal holdfast, was found to have an age of 4265 (±44) years,[9] and is believed to be the oldest recorded marine organism.