Sapphire Button [Orthopyxis]

Description

Orthopyxis is a genus of marine hydrozoans under the family Campanulariidae, commonly referred to as Sapphire Buttons. These organisms are known for their striking blue coloration and form elegant, cup-shaped structures that house the feeding polyps. They are predominantly found attached to algae, rocks, or other hard substrates in cold to temperate waters. The life cycle of Orthopyxis species involves an alternation between sessile polyp colonies and a mobile medusa stage, which contributes to their dispersal and genetic diversity across vast marine habitats.

Species

Sapphire Button Jellyfish [Porpita porpita]

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Taxonomy