Aspect: A conglomerate of fan-disposed arrays of very fine brown tubes that look like modern sophistcated dessert decorations. Population: Common, but generally hidden. Notable feature: Close examination show that there are connections between the spoking tubular branches of each fan-shaped array. Environment: With rare exceptions, occurs in protected recesses, but as seen in some of the pictures below can develop on the exposed silted gunwale of a wreck, the Franjack in this occurrence. Behaviour: -