Sertulariid hydroids [Sertulariidae]

Description

Sertulariidae, or sertulariid hydroids, comprise a family of hydrozoans that build intricate, branching colonies resembling miniature trees. Each colony is composed of a network of tubes housing individual polyps. These hydroids are mostly found in colder seas, where they attach to rocks, algae, or other hard substrates.

Genera

Thread Hornworts [Abietinaria]

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Northern Tubeworts [Diphasia]

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Silk Corals [Halecium]

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Pipe Hydroids [Thuiaria]

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Taxonomy