Tethya citrina - Yellow golfball sponge - Citroenspons

Tethya citrina  Sarà & Melone, 1965

Yellow golfball sponge - Citroenspons 

Synonym: Sea lemon

Porthkerris, United Kingdom, 12-9-2013.

Strada Costiera, Trieste, Italy, 8-9-2016.

Strada Costiera, Trieste, Italy, 7-9-2016.