an octopus with tentacles underwater attacks a ship in the ocean. of a giant sea monster, a giant ocean

kraken monster ocean sea ship animal sail cartoon boat background design water travel nature hand illustration mountain graphic red fantasy adventure stone rock underwater wooden marine sailboat squid octopus nautical tentacle cuttlefish shipwreck nautilus vessel arms danger cephalopod giant creature cthulhu leviathan attack beast crash deep huge sucker under ai generated