Polymastia umbraculum

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Polymastia umbraculum
Scientific classification
Kingdom: Animalia
Phylum: Porifera
Class: Demospongiae
Order: Hadromerida
Family: Polymastiidae
Genus: Polymastia
Species: P. umbraculum
Binomial name
Polymastia umbraculum
Kelly-Borges & Bergquist, 1997

Polymastia umbraculum is a species of demosponge belonging to the family Polymastiidae. It is only known from rocky subtidal habitats around Kawau Island off the North Island of New Zealand.

This is a thickly encrusting sponge with a very firm texture, growing in loosely attached patches up to 7 cm across. The granular outer layer is brilliant yellow-orange with a rather darker interior carrying many symbiont foraminifera. It is often infested with the parasitic amphipod Polycheria antarctica.

References

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