Tethya rubra, the red golf ball sponge, is a species of demosponge belonging to the family Tethyidae. 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.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0