Kingdom- Animalia Subkingdom- Metazoa Phylum- Cnidaria
Anthozoans
Do not have a medusa stage, and release sperm & egg which form a planula. Like those of other cnidarians, the individual polyps have a cylindrical body crowned by a ring of tentacles surrounding the mouth. The mouth leads into a tubular pharynx which descends for some distance into the body before opening into the gastrovascular cavity that fills the interior of the body and tentacles. Unlike other cnidarians, however, the cavity is subdivided by a number of radiating partitions
Scyphozoans
Usually display a four part symmetry and have an internal gelatinous material called mesoglea, which provides the same structural integrity a skeleton. Scyphozoans are found throughout the world's oceans. Scyphozoans can reproduce by budding several medusae off from its upper surface.
Hydrozoans
Freshwater jelly, freshwater polyps, and pink-hearted hydroids Include both polypoid and medusoid stage in their lifecycles. Hydrozoans are both predators and prey for many marine organisms, and large seasonal blooms of medusae may strongly affect local fish and zooplankton populations. Some species of polyps are hosts for symbiotic algae.