Ключевые слова: aquatic, background, black, botany, caltrop, closeup, dangerous, detail, devil, devil pod, dry, evil, fruit, hard, horn, hungary, isolated, macro, natans, natural, nature, nut, object, plant, pointy, river, seed, sharp, species, spike, spiky, thorn, tough, trapa, trapa natans, water, water caltrop, water chestnut, white,