Have you ever seen a blue sea creature like this one? The oceans of the world are home to some unusual creatures, and few ...

The sea angel is a sea slug… but one that took a rather different evolutionary path. The sea angel appears to ‘fly’ through the water. They are ‘pelagic’ or open water species ...

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 ...