Cnidarian Biology

noun a class of sea anemones

• Actiniae are a class of marine animals that belong to the phylum Cnidaria.
• I saw a bunch of actiniae while snorkeling in the ocean.
• Those actiniae look pretty cool, don't they?
• The actiniae swayed gracefully in the water, resembling delicate flowers.

noun a class of sea anemones

• The actiniaria is a subclass of sea anemones found in marine environments.
• I saw a bunch of actiniaria while snorkeling near the coral reef.
• Check out those cool actiniaria hanging out on the ocean floor.
• The actiniaria swayed gracefully in the ocean currents, resembling a field of flowers underwater.

noun a specialized region of the body in certain marine invertebrates, such as sea anemones and jellyfish, that contains the mouth and tentacles

• The actinosoma is the central disc of a sea star, from which the arms radiate.
• Did you know the actinosoma is the main body part of a sea star?
• Check out the actinosoma on that sea star, it's pretty cool.
• The actinosoma can be seen as the heart of the sea star, connecting all its arms together.