Callyspongia crassa

Callyspongia crassa, commonly known as prickly tube-sponge, is a species of sponge found from the Red Sea to Seychelles. Its wide flexible brown tube with exterior protuberances appears single or clusters and reaches up to 50 centimetres (20 in) in size. * * *

Callyspongia crassa

Callyspongia crassa, commonly known as prickly tube-sponge, is a species of sponge found from the Red Sea to Seychelles. Its wide flexible brown tube with exterior protuberances appears single or clusters and reaches up to 50 centimetres (20 in) in size. * * *