I didn't see big octopuses near the Creta-Panorama seashore. Small ones swim under our legs. Nobody was afraid of them because nobody had got a mask (I had).
Octopuses chase crabs. There were a lot of crabs. Also I saw a moray, colorful christmas worms, and an odd very big (50cm) scary black worm which name is unknown (to me). The worm issued black ink like octopuses do.