A medusae is an animal that lives for not even a day.
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Medusae are the adult, free-swimming stage of jellyfish, characterized by a bell-shaped body with tentacles hanging down. They are capable of movement and capturing prey using their stinging tentacles. Medusae are part of the life cycle of most jellyfish species.
Typically, a mature gonozoid will have one maturing medusa visible within it.
In the life cycle of cnidarians like jellyfish (coelenterates), polyps reproduce asexually by budding to produce medusae. The medusae then reproduce sexually to form new polyps where the cycle continues. This alternation of generations allows for both sexual and asexual reproduction within the cnidarian life cycle.
Benthocodon reproduces by releasing eggs and sperm into the water during mass spawning events. Fertilization occurs externally, and the resulting larvae develop into young medusae before settling and metamorphosing into adult benthocodon.
Cnidaria is the phylum that exhibits both medusa and polyp stages in its life cycle. Medusae are the free-swimming form, while polyps are typically attached to a substrate.
The two body forms of cnidarians are the polyp and the medusa. Polyps are typically sessile, tube-shaped organisms attached to a substrate, while medusae are free-swimming, umbrella-shaped organisms.