Alexander Semenov is the head diver at Moscow State University’s White Sea Biological Station in the Russian Arctic. When he’s not doing science-y stuff and whatever else head divers at biological stations do, he’s taking photographs of whatever beautiful plants and animals he finds underwater and posting them to his Flickr. The latest installment, uploaded over the weekend, documents the colorful and abstract geometric patterns of the red sea’s coral reefs. Take a look in the gallery above.

(Photos: Alexander Semenov/Flickr)