Photo: Antonio Sontuoso · CC BY-SA 2.0 (Wikimedia Commons)
Scientific name
Cotylorhiza tuberculata
Group
Cnidarians (corals, anemones, jellyfish)
Rarity
Common
Where to see it
Mediterranean
Conservation status (IUCN)
Not evaluated
Did you know?
Its domed yellow bell edged with a paler rim gives it the look of a fried egg floating in the water, and its mild sting is barely felt by most swimmers.
What defines this group — Cnidarians (corals, anemones, jellyfish)
Corals, anemones and jellyfish: the same simple animal, anchored to the bottom or drifting in open water.
All armed with cnidocytes, harpoon cells that fire on contact.
A body arranged in rays around a single opening, serving as both mouth and exit.
Hard corals host algae in their tissue: it is their departure that causes bleaching.