Jellyfish

A jellyfish is a free-swimming marine animal with a bell-shaped body and trailing tentacles. They are not true fish, but are a type of gelatinous zooplankton. They belong to the phylum Cnidaria, which also includes corals and sea anemones. 🌊

A jellyfish's body, or bell, is made of a gelatinous substance called mesoglea, which is over 95% water. The bell can be a variety of shapes, from a simple dome to a flat disk. They have a mouth on the underside of their bell, surrounded by oral arms and stinging tentacles. The tentacles are covered in thousands of stinging cells called cnidocytes, which they use to capture prey.

Jellyfish are found in all of the world's oceans, from the surface to the deep sea. They are carnivores that feed on a variety of prey, including small fish, crustaceans, and other zooplankton. They are a passive hunter, simply drifting with the ocean currents and waiting for their prey to come to them.

The jellyfish life cycle is complex. They start as a polyp that attaches to the seabed, and then a series of buds are released, each of which develops into a free-swimming jellyfish. The jellyfish then reproduces sexually, and the cycle begins again.