Ключевые слова: animal, aquatic, beach, biology, black, black background, cake urchins, close up, closeup, clypeaster subdepressus, clypeasterodia, creature, dry, echinoid, isolated, object, ocean, pansy shell, pattern, petallike pattern, radial symmetry, sand cakes, sand dollar, sea biscuit, sea cookie, sea shell, sea urchin, shell, skeleton, snapper biscuit, structure, summer, texture, vacation,