Elephant Ear Anemone/Giant Cup Mushroom Anemone - Amplexidiscus fenestrafer
The True Elephant Ear Mushroom or Giant Cup Mushroom - Amplexidiscus fenestrafer has an oral disc with beadlike verrucae that are sparsely spattered across the surface. The name fenestrafer means "windowbearer" in Latin and has to do the bare area near the edges of their oral disc. Once contact with the mushroom is made, its stinging cells immobilize the prey, and then it closes up within seconds.
"Amplexidiscus fenestrafer", also known as the elephant ear anemone, is a species of coral belonging to the phylum Cnidaria. The name "Elephant Ear Anemone" is a misnomer because it is actually a species of coral. It is the only species in the genus "Amplexidiscus".