Gorgeous photograph of a Coconut Octopus.
The site I got it from, All That Is Interesting, had no attribution details. It's a beautifully composed picture so kudos to whoever took it. The rows of little blue glow-in-the-dark Jelly Babies along the edge of the tentacles are so even and precise. (Yes, I know they are suckers seen edge-on, but they look like Jelly Babies to me.)