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Polyorchis

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Polyorchis, or bell jellies, is a genus of hydrozoans in the family Corynidae. They are transparent with red coloration in their internal organs and eye spots around the rim of their bell. The red pigmentation helps them camouflage. They are often found in harbors, marinas, and other calm waters close to shore. They feed on plankton and benthic crustaceans and are found near the sea floor. The bells can reach about 2.25 inches (5 cm).[1]

P. pencillatus is nicknamed "red-eyed jellyfish". At the base of the tentacles are several eyes, called ocelli, which contain light-sensing cells and red pigments.[2]

References

  1. ^ "Bell jelly, Coastal Wetlands, Invertebrates, Polyorchis sp at the Monterey Bay Aquarium". www.montereybayaquarium.org. Retrieved 2017-01-10.
  2. ^ Anna Klompen et al.: Peering Into the Inner Workings of Evolution With Jellyfish Eyes. On: SciTechDaily, April 8, 2022. Source: University of Kansas.

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Polyorchis: Brief Summary

provided by wikipedia EN

Polyorchis, or bell jellies, is a genus of hydrozoans in the family Corynidae. They are transparent with red coloration in their internal organs and eye spots around the rim of their bell. The red pigmentation helps them camouflage. They are often found in harbors, marinas, and other calm waters close to shore. They feed on plankton and benthic crustaceans and are found near the sea floor. The bells can reach about 2.25 inches (5 cm).

P. pencillatus is nicknamed "red-eyed jellyfish". At the base of the tentacles are several eyes, called ocelli, which contain light-sensing cells and red pigments.

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Diagnosis

provided by World Register of Marine Species
Medusa: marginal hollow tentacles numerous, in a simple row along exumbrella margin; tentacular bulbs tubular, adnate, with ocellus on short spur; four radial canals with numerous, short, blind lateral diverticula; ring canal with or without branched diverticula; gastric peduncle pronounced; manubrium prismatic with pendant sausage-shaped bearing the gonads; four crenulated oral lips with distinct nematocysts rows. Polyp unknown
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Schuchert, Peter, P.