vintage octopus. sea kraken. cephalopod animal sketch. aquatic squid or tentacle anatomy. engraving underwater

octopus kraken animal sea squid sketch underwater cuttlefish cephalopod vintage aquatic tentacle wave ocean marine zoology undersea predator devilfish engraving ink invertebrate mollusk water wild nature seafood line cthulhu nautical natural tattoo element biology creature anatomy monster swimming beast drawing fish wildlife aquarium creative vector monochrome graphic outline isolated set