Sometimes referred to as the Oaten Pipe Hydroid, Tubularia indivisa forms small, branching twig like colonies terminating in beautiful flower-like polyps in pink or red. The polyps which catch plankton, are about 15mm across and only present in the Spring. They are heavily predated by a variety of nudibranchs so that by late June most of the polyps have vanished. Very common around all British coast, this hydroid needs a hard surface on which to establish itself.
St. Abbs Marine Reserve, Berwickshire. Scotland