Polyp (zoology) - Wikipedia
In the class Anthozoa, comprising the sea anemones and corals, the individual is always a polyp; in the class Hydrozoa, however, the individual may be either a polyp or a medusa, [1] with most species undergoing a life cycle with both a polyp stage and a medusa stage.
Polyp | Cnidarian, Coral & Sea Anemone | Britannica
Polyp, in zoology, one of two principal body forms occurring in members of the animal phylum Cnidaria. The polyp may be solitary, as in the sea anemone, or colonial, as in coral, and is sessile (attached to a surface). The upper, or free, end of the body, which is …
Sea anemone - Wikipedia
A typical sea anemone is a single polyp attached to a hard surface by its base, but some species live in soft sediment, and a few float near the surface of the water. The polyp has a columnar trunk topped by an oral disc with a ring of tentacles and a central mouth.
Corals and sea anemones (anthozoa) | Smithsonian's National ...
The class Anthozoa (under the phylum Cnidaria) includes corals, anemones, sea pens and seafans. Anthozoa consists of 10 orders and thousands of species. Adults are attached to the seabed, but their larvae are free-floating and can drift to new settlements.
Coral skeletons protect polyps, the soft bodies of coral. A polyp is made up of a sac-like body with a single opening (a mouth) that is surrounded by tentacles, and a cavity that contains the stomach. Tentacles house thousands of cnidocytes, each with a …
Corals - National Geographic
Coral polyps are tiny, soft-bodied organisms related to sea anemones and jellyfish. At their base is a hard, protective limestone skeleton called a calicle, which forms the structure of coral...
Corals Tutorial: What are corals? - NOAA's National Ocean Service
Most of the time, a coral is made up of individual animals called polyps. Each polyp has a stomach that opens at only one end. This opening, called the mouth, is surrounded by a circle of tentacles.
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