Andresia partenopea

Bispira volutacornis
Is a polychaete worm from the Sabellidae family. The body of the worm consists of a head, a cylindrical, segmented body and a tail piece. The head consists of a prostomium (part of the mouth) and a peristomium (area around the mouth) and carries paired appendages (palps, antennae and cirri). Bispira volutacornis was first scientifically described in 1804 by Montagu.

Cerianthus membranaceus
Is a genus of tube-dwelling anemones in the family Cerianthidae. Members of the genus are found worldwide. They are predators, scavengers and omnivores. Members of this genus do not have a pedal disc with which to hold themselves in position. Instead they live semi-buried in soft substrate surrounded by a parchment-like tube which they secrete. This surrounds the whole anemone up to its crown of tentacles. Sand grains, debris and shell fragments usually stick to the outer side of the tube. When it is disturbed, the anemone retracts swiftly back into the tube. Some of the larger species can have a column of up to 25 inches (640 mm) in length. The longitudinal muscles in the trunk are powerful but the transverse ones are weak. The outer ring of tentacles are long and tapering. The tube is flexible and the anemone can extend its tentacles a surprisingly long way. The inner ring of tentacles surrounds the central mouth and assists in pushing food inside.

Myxicola infundibulum
Is a polychaete worm from the Sabellidae family. The body of the worm consists of a head, a cylindrical, segmented body and a tail piece. The head consists of a prostomium (part of the mouth) and a peristomium (area around the mouth) and carries paired appendages (palps, antennae and cirri). Myxicola infundibulum was first scientifically described in 1808 by Montagu.