Coelenterate

[Jason Yan]

a type of sea creature that has a simple body with tentacles and a single opening at the centre, such as a jellyfish or a sea anemone

[Merna]

An aquatic invertebrate animal of a phylum that includes jellyfishes, corals, and sea anemones. They typically have a tube- or cup-shaped body with a single opening ringed with tentacles that bear stinging cells (nematocysts).