A spherical sponge with a attachment disc or short “roots”. The surface has a scaly look. It is bright orange externally and dull orange internally. The texture is firm and rough to touch.
Common in the low tide zone to 20 m on northern shores. Often found in shaded areas on rock walls and under seaweeds.
It filters microscopic phytoplankton out of the water.
Little seed sponges bud off to develop new sponges.
Subtidal Invertebrates of New Zealand: A Divers’ Guide; Wing