What exactly is this unusual blue sea creature? Get to know one of the more unusual members of the sea slug family in our ...

Blue sea slugs were believed to prey on the Portuguese man-of-war, which contains highly poisonous nematocysts, and uses the nematocysts for defense by incorporating them into the tips of its lateral ...

I dove about 10 meters deep with an air tank on my back. I saw varieties such as the festive sea slug, which has blue and yellow patterns, and the Goniobranchus tinctorius, which has red woven ...

The banana slug is often bright yellow, though it can be brown, white, and green. Like all slugs, banana slugs use four tentacles to sense their environment. A pair of upper tentacles, protruding ...

This method of protection can keep almost all predators at bay - but not the kaleidoscopically colourful sea slug. Nudibranchs ... Glaucus atlanticus - also known as the sea swallow, blue angel or ...