Diver Jonathan Gordon was lucky enough to capture this amazing footage of an octopus' impressive camouflage.
He writes:
"This guy took me completely by surprise while snorkelling in the Caribbean. I dove down to have a look at the shell that you can see just under where the octopus appears and as I approached the octopus came out of hiding. I had literally no idea he was there until I was about a metre away."
Bet you won't see him until it's too late.
No matter how many times we watch this, we still can't see him until he changes colour.
Respect.