Photographer and scientific diver Alexander Semenov takes beautiful underwater images.
His close-ups show the intricate detailing of the world's hidden creatures, from the White Sea to the Great Barrier Reef in Australia.
There are shapes and colors you wouldn't even imagine in such a murky place.
You might recognize some old friends.
And jump at the creepy crawlers. (Fair warning: If you don't like real-life nightmares, scroll really fast for a second.)
Mythical little creatures putter about.
Some aren't pleased about the interruption.
Some look like bouquets that are pretty enough to pick (but shouldn't because, ow!).
The others we'll just pretend are really in space.
But all of them show the grandeur of what lies below.