Luoghi in Caratteristiche Undersea che comincia con la lettera "hor"
Horizon Deep (abisso),
Horizon Depth (abisso),
Horizon Guyot (altopiano),
Horizon Ridge (cresta),
Horizon Tablemount (altopiano)Horn Dome (collina),
Horn Reef Outer Ground (riva),
Horn Reef South Ground (riva),
Horn Strath (valle),
Hornafjardardjúp (valle),
Hornafjarðardjúp (valle),
Hornsund Bank (riva),
Hornsund Strath (valle),
Hornsund Valley (valle)Horseshoe Abyssal Plain (pianura),
Horseshoe Basin (bacino),
Horseshoe Plain (pianura),
Horseshoe Seamount Group (montagne marine),
Horseshoe Seamounts (montagne marine)Horton Guyot (montagna marina)
Coordinate Geografiche