Phorbas sponge
This is a medium thick, milky light blue to purple blue bark sponge with pores on the surface of the crater. Its structre is soft and spongy
with a diameter of 10-20 cm.
It inhabits hard surfaces, in shaded, half-caved areas, and can be found from surface to great depths.
Spužva phorbas
Srednje debela, ljubičastoplava do mliječno svjetloplava korasta spužva s kraterskim porama na površini. Mekane je i spužvaste
strukture, promjera 10-20 cm.
Nastanjuje primarne i sekundarne tvrde podloge, u zasjenjenim područjima, najčešće polušpiljama, od površine do velikih dubina.