The answer is scyphozoan; anthozoan.
In the phylum cnidaria, jellies are members of the <u>scyphozoan</u> clade and corals are members of the <u>anthozoan</u> clade. Cnidaria is a phylum of aquatic invertebrates. It includes sea anemones, corals, jellyfish, box jellies, Hydra, etc. Corals are the members of class Anthozoa and jellies are members of class Scyphozoa.
Their will be fewer competitors in the new habitat
Lifespan - could be due to predators and food intake
A unicellular or single celled organism is the term for organisms composed of only one cell.
I hope this helped!
