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Length ot the tubes 20 cm
Coral reef in the Red Sea, near Hurghada
Thx for the advice.
Sorry, but this branch of marine biology may require the advise of an expert (which I am not), usually samples are needed, spicule shape, density and tissue are studied in detail to differentiate subspecies. Was the body soft or rigid? What is the diameter of a tube and the length of the structure? Better chance to get proper advise from a university... You may try to contact Edwin Cruz-Rivera from The American University in Cairo, he might be able to know someone up to the task.
Thank you for your help. I always thought, it's a sponge, but on the sites I visited I found no advice of any species.
it is a demosponge... I am no specialist but proper identification of porifera may prove tricky.
Some sort of tube sponges :-)
Spotted on Jul 8, 2006 Submitted on Aug 30, 2013
and 2 other people favorited this spotting