Tethya samaaii, also known as the red golf ball sponge, is a species of sea sponge belonging to the family Tethyidae.

[1] It is spherical in shape and grows to about 6 cm in diameter.

It is reddish in colour.

It appears to be endemic to the west coast of South Africa and has been found in 12m of water.

This article about a demosponge is a stub.