EVERYDAY SCIENCE

Detailed explanation-1: -Class Scyphozoa (“cup animals”) includes all (and only) the marine jellies, with about 200 known species. The medusa is the prominent stage in the life cycle, although there is a polyp stage in the life cycle of most species.

Detailed explanation-2: -The Scyphozoa are an exclusively marine class of the phylum Cnidaria, referred to as the true jellyfish (or “true jellies").

Detailed explanation-3: -Scyphozoans are the more commonly thought of Cnidarians. They have a true medusa stage and can be very large. This are often referred to as Jellyfish, the largest one known can have a bell over 10ft in diameter. Scyphozoans spend most of their life in the medusa stage and some species may often lack a polyp stage.

Detailed explanation-4: -Scyphozoa. Scyphozoa are the most familiar jellyfishes, including most of the bigger and more colorful jellies that interact with humans, and are sometimes called “true jellyfish” for this reason. Scyphozoans are most often noticed in their medusa body form, and there are at least 200 species.

Detailed explanation-5: -Scyphozoans share the following characteristics: Medusa form dominates the life cycle, and some do not have a polyp stage. The medusae may be large, are often colored (often red, orange, or yellow), do not have a velum.