Is the Grand Canyon the deepest canyon in the world ?
Hudson Canyon , extending from the Hudson River Ganges Canyon , extending from the Ganges Indus Canyon , extending from the Indus River Kaikoura Canyon , extending offshore from the Kaikoura Peninsula , New Zealand La Jolla and Scripps Canyon , off the coast of La Jolla , southern California Monterey Canyon , off the coast of central California Pribilof Canyon , in the Bering Sea Whittard Canyon , Atlantic Ocean off southwest Ireland Zhemchug Canyon the largest submarine canyon in the world , in the Bering sea