The shag-rug sea slug is not common in our area. They eat sea anemones such as Urticina crassicornis and Metridum senile . Their secretions serve to discharge the anemone's nematocysts before they start to take bites from the anemone's column. The Order Nudibranchia are carnivores and are often brightly colored, which serves to warn away predators. Some species apparently secrete sulfuric acid, which makes them distasteful to predators.
Sea slugs are also hermaphroditic, both male and female at the same time.
Digital photo by Jan Haaga. For a complete list of References, Click here.