Actiniidae
Actiniidae is a family of sea anemones in the order Actiniaria, class Anthozoa, phylum Cnidaria. It includes a large and ecologically important group of sessile, polyp-form cnidarians that typically attach to hard substrates by a flat pedal disc and extend a cylindrical body with a crown of tentacles surrounding a central mouth. Like other anthozoans, members of Actiniidae lack a rigid skeleton; their soft tissue relies on cnidocytes with nematocysts to capture prey.
Most actiniids occur in marine environments from shallow subtidal zones to offshore habitats, with a cosmopolitan
Reproduction in Actiniidae is variable. Species may reproduce sexually, releasing eggs and sperm into the water
Some Actiniidae form symbiotic relationships with photosynthetic algae (zooxanthellae) or other organisms, which can contribute to