snorkel
['grey whale, gray whale, devilfish, Eschrichtius gibbosus, Eschrichtius robustus', 'water snake', 'plastic bag', 'chambered nautilus, pearly nautilus, nautilus', 'seashore, coast, seacoast, sea-coast', 'pelican', 'chiton, coat-of-mail shell, sea cradle, polyplacophore']