Sea Life, Animal, Seashell, Invertebrate, hard, carbonate, calcium, solid, texture, shore, bone, structure, feed, sepia, life, animal, white, bird, nature, food, shell, background, chalk, sand, beach, brown, mineral, soil, weaponry, spar, earth, ammunition, salt, reddish brown, difficult
Found, natural Cuttlefish bone aka cuttlebone, the internal shell of cephalopod. On sand. Fed to pet birds.