continental water earthworm are located on space
earth is oblate_sphere. pond is cavity_in_earth. earth is oblate_sphereoid. find_underground is earthworms. find_outer_space is man_made_sattelites. outer_space is location. giant_northwest_shipworm is shipworm. continental_shelf is ocean_floor. international_space_station is orbiting_earth. find_underground is earthworm.