Nudibranch hunters are the birdwatchers of the sea: They move slowly through their ... I turn a rock over and find a large slug-like creature. It is deep purple, with a frilly orange and lilac ...

The results of these extensive studies, published in the journal "Deep-Sea Research Part I," indicate that the evolution of ...

allowing us to study the luminous behavior of deep-sea animals in their natural habitat.” Like other nudibranchs, the mystery mollusk is a hermaphrodite, possessing both male and female sex organs.

This method of protection can keep almost all predators at bay - but not the kaleidoscopically colourful sea slug. Nudibranchs, commonly known as sea slugs, are a group of shell-less marine molluscs.

There are spectacular deep-sea nudibranchs as well. Here is a new species of Dendronotus, collected in 2013 and found feeding on hydroids at a methane seep off California. Frenulates are extraordinary ...