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Phragmatopoma californica, commonly known as the sandcastle worm, the honeycomb worm [1] or the honeycomb tube worm, [2] is a reef-forming marine polychaete worm belonging to the family Sabellarididae. It is dark brown in color with a crown of lavender tentacles and has a length of up to about 7.5 centimeters (3.0 in). [3]
Lanice conchilega, commonly known as the sand mason worm, is a species of burrowing marine polychaete worm. It builds a characteristic tube which projects from the seabed, consisting of cemented sand grains and shell fragments with a fringe at the top. Polychaetes, or marine bristle worms, have elongated bodies divided into many segments.
Sabellaria spinulosa lives in a tube made of shell fragments and coarse sand cemented together with mucus. The tube has a circular cross section and can be closed by an operculum formed by bristles growing on the head of the worm. There are several thoracic segments and the abdomen has many segments that have hooked bristles on raised lobes.
Pectinariidae, or the trumpet worms or ice cream cone worms, are a family of marine polychaete worms that build tubes using grains of sand roughly resembling ice cream cones or trumpets. These structures can be up to 5 centimetres (2 in) long.
The top of the tube can be closed by an operculum formed by several rings of bristles on the head of the worm. The head also bears several fine feeding tentacles and a pair of small palps. The thoracic section of the body has 3 or 4 segments with paddle-like capillary bristles.
The tubes are built from shell fragments or sand and are used to protect the worm from predators and can be repaired if damaged near the entrance. The tube is made up of a number of overlapping layers of material glued together with mucus. There are two sexes and spawning takes place in the spring and again in the autumn. The larvae develop in ...
Neosabellaria cementarium lives in a tube which it creates by cementing together grains of sand. This is attached along its length to a rock, shell or other hard substrate . At first it is short but it is widened and extended as the worm grows, sometimes reaching a length of more than 7 centimetres (2.8 in) [ 2 ] and a diameter of 4 millimetres ...
Lanice, (also known as the sand mason worm), is a genus of burrowing marine polychaetes (commonly referred to as "bristle worms") typically found in the littoral zone. A Lanice conchilega tube on the Dutch Wadden Sea shore. L. conchilega is a common sight on European beaches and in tide pools.