Habitat: Indo-West Pacific
This guy is known scientifically as Nembrotha kubaryana, but usually they are just referred to as Variable Neon Slugs. Their beautiful green and orange markings to warn predators it wouldn’t be a tasty snack. However, if something menacing did get too close then the Variable Neon Slug would ooze a slimy mucus around its entire body. This mucus is quite poisonous as it contains the toxins of the slug’s prey (ascidians or sea squirts, which are marine invertebrate filter feeders).
Pretty, but also pretty gross.