Ivell's sea anemone

Ivell's sea anemone
Artist's image of the anemone

Critically endangered, possibly extinct  (IUCN 3.1)
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Cnidaria
Subphylum: Anthozoa
Class: Hexacorallia
Order: Actiniaria
Family: Edwardsiidae
Genus: Edwardsia
Species:
E. ivelli
Binomial name
Edwardsia ivelli
Manuel, 1975

Ivell's sea anemone (Edwardsia ivelli) is a possibly extinct species of sea anemone in the family Edwardsiidae. It is endemic to a single location, Widewater Lagoon in West Sussex, England, where it was first discovered by Richard Ivell but has not been recorded since 1973.