Sea Creatures

noun a mythical creature that is half human and half fish, typically male

• The ancient myth of the merman has been passed down through generations.
• I saw a cool movie about a merman last night.
• That dude at the beach totally looks like a merman with his long hair and speedo.
• His ability to navigate both the land and sea earned him the nickname 'merman'.

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 member of the class Actinozoa, which includes sea anemones and corals

• The actinizoan is a type of marine invertebrate known for its radial symmetry.
• I saw a cool actinizoan at the aquarium today, it looked like a starfish!
• That actinizoan is pretty rad, dude.
• Her personality is like an actinizoan, with different facets radiating outwards.

noun a taxonomic group that includes sea anemones and corals, characterized by having stinging cells called nematocysts

• The actinoidea are a subclass of the class Anthozoa, consisting of sea anemones and corals.
• I saw some cool actinoidea at the aquarium today.
• Those actinoidea creatures are really weird looking!
• The actinoidea sway gently in the ocean currents, like dancers in a ballet.