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.
The bizarre method and amazing mating display of Pseudobiceros apricus.
There are many beautiful false or allied cowries and Diminovula aurantiomacula is but one showing that whilst the shell may be plain the mantle is beautifully decorated.
Kleptoplasty – Stealing chloroplast to obtain an ongoing source of energy.
The emperor shrimp Periclimenes imperator hitches a ride on the spanish dancer nudibranch.
The “solar-powered” sea slug Phyllodesmium magnum farms zooxanthellae in its body obtained from its soft coral diet.
Hymenocera picta, the Harlequin Shrimp, is a voracious feeder on live sea stars that are turned over and dragged back to the lair for devouring.
Some sea slugs have the ability to cast off portions of their anatomy in a process called autotomy. Berthella martensi is a side-gilled slug with this ability.