Turritopsis dohrnii
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Turritopsis dohrnii, commonly known as the immortal jellyfish, is a species of small, biologically immortal Medusozoa found worldwide in temperate to tropic waters. It is one of the few known cases of
Turritopsis dohrnii
Polyp (zoology)
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A polyp in zoology is one of two forms found in the phylum Cnidaria, the other being the medusa. Polyps are roughly cylindrical in shape and elongated at the axis of the vase-shaped body. In solitary
Turritopsis dohrnii
…other hydrozoans, T. dohrnii begin their lives as tiny, free-swimming larvae known as planulae. As a planula settles down, it gives rise to a colony of polyps that are attached to the sea floor. All the polyps and medusa arising from a single planula are clones. The polyps form into an extensively branched…
Gorgonian polyps in a reef aquarium
Anatomy of a coral polyp
Polyps of a colony of Cnidaria