�amoebae, bacteria, fungi, algae, diatoms, sponges, brachiopods, hydra-like organisms, tiny fish, urchins, starfish, corals, polyps, cristal structures (minerals), crystals (salt, rock salt, or halite?), rocks, pebbles, gravel, sand grains, tiny shells, pearls, oyster shells, snail shells, worms, insects, spiders, larvae (moth, fly, or beetle?)