Common octopus in sea grass in the Gulf of Lion in the Mediterranean Sea
Common octopus in sea grass in the Gulf of Lion in the Mediterranean Sea (© BIOSPHOTO/Alamy)
Uncommonly cool
An octopus's life depends on camouflage, so don't tell this one it's sticking out like a sore tentacle. Or maybe this master of disguise is just posing for the camera? Either way, we're glad to have spotted it just in time for World Octopus Day!
© BIOSPHOTO/Alamy