in the sea rivaling the Rocky Mountains, canyons as grand as the Grand
Canyon, deep trenches paralleling continental margins and island arcs
that are the deepest places in the oceans -- all these and more have
been revealed by science and survey ships plying the world ocean.
the waters of the United States, the vast majority of canyons, basins,
banks, and seamounts were discovered by Coast and Geodetic Survey
ships engaged in bathymetric mapping projects. The great salt domes
and the bizarre basin topography of the Texas-Louisiana slope were
first discovered by C&GS ships conducting systematic mapping operations.
share in these discoveries and learn about the wondrous features of
our continental slopes and the deep sea floor.