Description of the Sea Anemone Most sea anemones are made up of a base, and an oral disk surrounded by tentacles. The base is a stalk that connects the animal to a rock or other surface. The oral disk is the sea anemone ’s version of a face – it has a flat surface with a mouth in the middle, and prey-catching tentacles around the edges. Sea anemones come in virtually every shape, size, and color. Interesting Facts About the Sea Anemone The sea anemone is a sessile marine predator of the order Actiniaria. They are named after a terrestrial flower due to their radially symmetric appearance and many tentacles. Most species appear as a single polyp attached to a hard surface such as a rocky or coral reef. There are many important details about the sea anemones that you need to know such as the sea anemone phylum, family, habitat, diet, and much more. The kingdom that sea anemones belong to is known as Animalia. Also, the phylum of sea anemone is Cnidaria. Apart from that, sea anemones belong to the class Anthozoa and Order Actiniaria. One very important thing to note about sea anemones is that the scientific name of the creature is also Actiniaria. This creature is a marine predator that has ... Sea Anemone is an invertebrate aquatic animal marked by soft bodies and has an ability to sting. They are close associates of corals and live rocks.