Holding on with suckers, it cracks the shell with its beak and injects poison. It usually returns home to eat the meal. Reach out and touch and taste someone An octopus explores with its tentacles and suckers. The suckers can taste the difference between sweet, sour and bitter, and can feel if something's rough or smooth. To grab a crab, an octopus draws up the centers of its suckers to create a vacuum.
Octopuses have tremendous gripping power.
While octopuses generally live life on the seafloor, squid are specialists in the open sea. Slick and speedy and with torpedo-shaped bodies, squid rocket through the water by squirting water through their siphons. Fins along their sides act like the wings of jets, steadying them as they go. Squid have eight arms, but they also have two longer appendages, called tentacles, specialized for capturing prey in the open ocean.