Species of sponge from southern Africa
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Tetilla capillosa, the furry sponge, is a species of demosponge from southern Africa.
Description.
This brown to grey-green sponge has a hemispherical to ovoid form. It is firm and tough and typically grows to be wide. The surface is completely covered in outward projecting spicules which may be up to long. It has a single large oscule () at the top. The cortex is undifferentiated.
Spicules.
The following spicules make up the skeleton of this species:
Skeleton.
Tracts of protriaenes, anatrienes and oxeas form a form a radial or spiral skeleton. They pierce the ectosome. These projecting spicules are soft and fuzzy. This is where the common name of the species comes from. Scattered oxeas are also present between these tracts. Sigmaspires are abundant throughout the sponge.
Distribution and habitat.
This species is found on the south and west coasts of southern Africa. It is found living at depths of off the coasts of South Africa and Namibia.