Russian photographer Alexander Semenov, who has a knack for capturing underwater life, has a new set of photographs—this time he captures creepy-looking, rarely seen underwater sea worms.
These images feature various types of sea worms, some of which are completely unknown to science. Half of the images were taken at the Lizard Island Research Station near the Great Barrier Reef, while the other half were taken at the White Sea Biological Station in northern Russia where Semenov normally works.
Captured against a black background, the horrific tendrils and tentacles of these bizarre creatures become more visible—leaving us to wonder what other mysteries the deep ocean holds.
Check out the photos below:
[via Colossal, images via Alexander Semenov]