No alternation of generations the medusoid phase being entirely suppressed sea anemones

• Corals

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Animal \An"i*mal\, a. [Cf. F. animal.] Of or relating to animals; as, animal functions. Pertaining to the merely sentient part of a creature, as distinguished from the intellectual, rational, or spiritual part; as, the animal passions or appetites. Consisting ...

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See anthozoan

Wikipedia Word definitions in Wikipedia
Anthozoa is a class within the phylum Cnidaria . Unlike other cnidarians, anthozoans do not have a medusa stage in their development. Instead, they release sperm and eggs that form a planula , which attaches to some substrate on which the cnidarian grows. ...