Octopus vulgaris (Common octopus)

This baby octopus had all the bravado of a giant!  What it lacked in size it more than made up in menacing poses.  As you can see from the sand just beneath it, it was very small.  It slowly moved away as it looked for a place to seek safety.  Very expressive and entertaining.  This was in Tossa de Mar, Costa Brava, in less than 3 meters (10 feet) of water.  A very pleasant way to end a nice dive.