Polymastia fusca

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Polymastia fusca
Scientific classification
Kingdom: Animalia
Phylum: Porifera
Class: Demospongiae
Order: Hadromerida
Family: Polymastiidae
Genus: Polymastia
Species: P. fusca
Binomial name
Polymastia fusca
Bergquist, 1961

Polymastia fusca is a species of demosponge belonging to the family Polymastiidae. It is found in shallow subtidal habitats in the far north of North Island, New Zealand.

This firm-textured sponge grows up to 20 cm across, often encrusting its substrate. The outer layer is very dark brown, contrasting with a much paler yellow or orange interior. The whole surface is covered in papillae, those at the centre markedly taller than those at the periphery.

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