An alcyonium is any of the genus Alcyonium, a family of soft corals.

Alcyonium digitatum was created in 1758.

The sponge known as "dead-man's finger" is a soft coral in the genus Alcyonium. It gets its name from its appearance, resembling the fingers of a dead hand. This species is typically found in cold waters and can be white, yellow, or orange in color.