A salp floating in the ocean like a spaceship cruising the deep space.
This strange creature is a pelagic tunicate, a very interesting group of marine organisms that gets overlooked often by divers. Despite their simple look (they are sometimes mistaken for a jellyfish), they are a quite evolved group closely related to vertebrates.
We can find them alone or forming large chains of many individuals (See the second picture). These are actually two different stages in its rather complex life cycle. The solitary form is the asexual phase of the salps and they produce those long chains of individuals. These chains are the sexual phase and the eggs that get fertilized will develop into new solitary individuals closing the cycle. They are definitely beautiful and fascinating creatures!