sea cucumber, holothurian
['echidna, spiny anteater, anteater', 'king crab, Alaska crab, Alaskan king crab, Alaska king crab, Paralithodes camtschatica', 'tailed frog, bell toad, ribbed toad, tailed toad, Ascaphus trui', 'harvestman, daddy longlegs, Phalangium opilio', 'seashore, coast, seacoast, sea-coast', 'mongoose', 'platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus']