Facts about hydra corals
* Hydra Corals can attach themselves to submerged rocks, leaves, twigs, and stretch out their tentacles to capture passing prey.
* Hydra Corals only exists only as polyps. They are a few mm long.
* Hydra Corals are made up of two cell layers, the ectoderm and the endoderm. They also have muscular protection called muscle tails.
* By contracting their muscles, the body can become long or thin.
* Hydra Corals only exists only as polyps. They are a few mm long.
* Hydra Corals are made up of two cell layers, the ectoderm and the endoderm. They also have muscular protection called muscle tails.
* By contracting their muscles, the body can become long or thin.
Digestive system
* Food enters the mouth of the Hydra Coral and digestion begins. The gut of the Hydra is the hollow cavity within the body and has only one opening, the mouth. Enzymes are produced by special cells in the endodermis and released into the gut cavity. These enzymes begin to break dowm food into smaller particles. Other lining cells have long flagella that wave and keep the contents of the gut well mixed. A further type of lining cell acts rather like an amoeba and engulfs small particles. Digestion is completed inside these cells in food vacuoles and products are diffused over the rest of the body. Undigested food is passed out of the cells into the gut cavity and from there to the outside through the mouth.