Apolemia


Apolemia is a genus of siphonophores. It is the only genus in the monotypic family Apolemiidae.
Despite appearing to be a single multicellular organism, they are actually a floating colony of polyps and medusoids, collectively known as zooids.

Species

The following species are classified within the genus Apolemia Eschscholtz, 1829:
These two genera are now considered synonymous with Apolemia.
In 2020 researchers working of the coast of Western Australia came across an Apolemia which had coiled itself into a spiral form. The outer "ring" was estimated to be 47 meters long. It was said to be longer than any other animal on the planet, if one includes colonial animals, but individuals of the lion's mane jellyfish are known to be larger; the largest known specimen of the latter had tentacles as long as and was projected to have a tentacular spread of about, making it one of the longest extant non-colonial animals.