Nudibranchs, commonly known as sea slugs, are a group of shell-less marine molluscs. Their name means 'naked gill', referring to the breathing apparatus on the outside of their soft bodies. But these ...

The sea slug has distinctive feathery gills on one side of its body A new species of sea slug has been discovered in UK waters. It was caught off the south-west of England from a research ship.

Nudibranchs are gastropod mollusks, like mussels, clams and scallops, but as adults they have no shell, so their soft body ...

Then I encountered my first nudibranch, a type of vibrant sea slug. I was swimming to Flat ... spiky projections that can ...