Tropical Corallimorpharia (Coelenterata: Anthozoa): feeding by envelopment

Abstract

Three species of tropical Australian corallimorpharians (family Actinodiscidae) lacking ectodermal nematocysts in their discal tentacles feed by entrapping prey with their oral discs. The largest species can close in three seconds, engulf four liters of water, and capture shrimps and fishes. It has captured anemonefishes in aquaria