beautiful cute sketch of an octopus. hand drawn of sea animal octopus in doodle style with black line

animal aquarium aquatic art baby background black book cartoon character children clip clipart color coloring comic creature cute design doodle drafting drawing drawn education face flat food fun funny graphic hand happy icon illustration image ink isolated kids life line marine mollusk monster nature ocean octopus outline painting paper pirate retro sea seafood sign silhouette sketch smile squid style swimming symbol tattoo tentacle tentacles undersea underwater vector vintage water white wild wildlife zoology