snorkel
['seashore, coast, seacoast, sea-coast', 'microphone, mike', 'ocarina, sweet potato', 'punching bag, punch bag, punching ball, punchball', 'bathtub, bathing tub, bath, tub', 'chiton, coat-of-mail shell, sea cradle, polyplacophore', 'chambered nautilus, pearly nautilus, nautilus']