Martian invasion

I went diving yesterday to help a colleague out with his research. While he counted fish along a transect, I explored. I saw my first wild sea horses - saying it like that makes me imagine them galloping past in a storm of turbulence, leaving a trail of silted water in their wake. As cool as they are with the whole "pregnant" male thing, they couldn't compare with seeing one of these:


It's a giant cuttle, Sepia apama (photo from here). When I first came across hovering just above the bottom, I had no idea what I was looking at. Its coloration and the raised skin flaps on its back made it look like part of the reef,though the fin along the bottom of its mantle rippled continuously. Its tentacles and arms were curled up into its face, and it sat starting at us with its strange eyes. At one point, my dive buddy and I moved to one side, and it moved so as to remain facing us. Was it an animal? Responsiveness suggested yes. Was it a fish? Completely the wrong shape. A vertebrate? Sure didn't look like any vertebrate I'd ever seen. An alien from Mars? Maybe. A Cephalopod? Distinct head region suggests probably - but far less interesting than the alien from Mars hypothesis. An octopus? Nope. A squid? Also nope. We surfaced and I asked my partner what it was. Fortunately, he recognized the creature. Unfortunately, he's from France and doesn't know the English word for it. Neither did the other guy on the boat who's from Germany. When I suggested cuttlefish, there was general consensus, backed up by the guidebook when we got back to the truck.

This may be one of the coolest things I've seen underwater in quite some time. It can't get over how otherworldly and alien it looked. Perhaps Martians have invaded Earth and have been classified as Cephalopods. It sure would explain their intelligence and looks. Come to think of it, Martian invasion would explain the intelligence and looks of a lot of people too. For example, Tom Cruise. No, wait - hasn't he expelled his aliens?