The flamboyant and spectacular Bubble Shell Hydatina physis is a primitive sea slug that hunts tube worms.

Asterophilia carlae is a symbiotic scale worm living on the underside of sea stars.

The allied cowrie Cuspivolva platysia on its obligate host, an Euplexaura species of gorgonian soft coral.

One of your favourite regular features in SportDiving Magazine is back, but in a new format. With a desire to carry on Neville Coleman’s wonderful