Luoghi in Caratteristiche Undersea che comincia con la lettera "ma"
Mabahiss Fracture Zone (zona di frattura),
Mabuhangin Shoal ()Macalde Canyon (canyon),
Macaloé Canyon (canyon),
Macaw Bank (collinetta),
Macclesfield Bank (riva),
MacDonald Bank (montagna marina),
Macdonald Seamount (montagna marina),
Mackenzie Canyon (canyon),
Mackenzie Seavalley (canyon),
Mackenzie Spot (riva),
Mackenzie Submarine Canyon (canyon),
Mackenzie Trough (canyon),
Maclear Deep (fossa),
Macnab Seamount (montagna marina),
MacNeil Bank (riva),
Macomber Seamount (montagna marina),
Macquarie Ridge (cresta),
Macquarie Ridge Complex (cresta),
Macquarie Rise (cresta),
Macquarie Swell (cresta),
Macquarie Trench (fossa),
Macquarie Trough (fossa),
Macquarie-Balleny Ridge (cresta),
Macquarie-Schwelle (cresta),
Macquire Ridge Complex (cresta),
Macrorin-Tai (scogliera),
Macunga Canyon (canyon)Madagascar Basin (bacino),
Madagascar Basin (bacino),
Madagascar Plateau (altopiano),
Madagascar Ridge (altopiano),
Madagascar Rise (altopiano),
Madagaskar-Becken (bacino),
Madagaskarskaya Kotlovina (bacino),
Madagaskarskaya Kotlovina (bacino),
Madagaskarskiy Khrebet (altopiano),
Madalene Shoals (scogliere),
Madden Basin (bacino),
Madden Canyon (canyon),
Madden Depression (bacino),
Madeira Abyssal Plain (pianura),
Madeira Plain (pianura),
Madeira Ridge (cresta),
Madeira Rise (cresta),
Madeira-Tore Rise (cresta),
Madingley Rise (pendio),
Madrepore Bank (riva)Maeander Reef (scogliera),
Maeno Bank (riva),
Maeno-se (riva)Magdalena Escarpment (scarpata),
Magdalena Fan (fan),
Magdalena Sea Scarp (scarpata),
Magellan Rise (pendio),
Magellan Seamount Group (montagne marine),
Magellan Seamounts (montagne marine),
Maggie Shoal (scogliera),
Magnaghi Seamount (montagna marina),
Magonis Valley (valle),
Magpie Bank (scogliera),
Magpie Shoal (scogliera),
Magsaysay Reef (scogliera)Mahabis Fracture Zone (zona di frattura),
Maher Seamount (montagna marina),
Mahi Mahi Fracture Zone (zona di frattura),
Mahia Banks (riva),
Mahia Seamount (montagna marina),
Mahin Canyon (canyon),
Mahler Seamount (montagna marina)Mai-no-se (riva),
Maiko Seamount (montagna marina),
Maimón Basin (bacino),
Maimón Escarpment (scarpata),
Maimonide Ridge (cresta),
Maio Seamount (montagna marina)Makar Canyon (canyon),
Makarov Basin (bacino),
Makarov Becken (bacino),
Makarov Deep (bacino),
Makarov Depression (bacino),
Makarov Guyot (montagna marina),
Makarov Seamount (montagna marina),
Makarov Seamounts (montagna marina),
Makassar Basin (bacino),
Makassar Trough (bacino),
Makkovik Bank (riva),
Makkuresufirudo Tui (riva),
Makorta Seamount (montagna marina)Malagassy Abyssal Plain (pianura),
Malagasy Abyssal Plain (pianura),
Malaguana-Gadao Ridge (pendio),
Malaguana-Gadao Rise (pendio),
Malahit Guyot (altopiano),
Malahoff Seamount (montagna marina),
Malakhit Guyot (altopiano),
Maldive Ridge (cresta),
Mallorca Channel (apertura),
Mallory Seamount (montagna marina),
Malloy Seamount (montagna marina),
Malloy Seamount (montagna marina),
Malpelo Ridge (cresta),
Malta Escarpment (scarpata),
Malta Plateau (altopiano),
Malta Ridge (cresta),
Malta Rise (pendio),
Malta Sill (pendio),
Malta Trough (canale),
Malvinas Chasm (canale),
Malvinas Escarpment (scarpata),
Malvinas Fracture Zone (zona di frattura),
Malvinas Trough (canale),
Mal’divskiy Khrebet (cresta)Mameyes Canyon (canyon),
Mammerickx Seamount (montagna marina)Man of War Spur (sperone),
Man-pu An-sha (scogliera),
Manasquan Canyon (canyon),
Manatee Seamount (montagna marina),
Manbu Ansha (scogliera),
Mandingo Canyon (canyon),
Manganari Canyon (canyon),
Mangola Shoal (secca),
Mangole Basin (bacino),
Mangole Bekken (bacino),
Manicou Bank (riva),
Manihiki Plateau (altopiano),
Manila Reef (scogliera),
Manila Trench (fossa),
Manipa Basin (bacino),
Manipa Bekken (bacino),
Mannaijeu Bank (scogliera),
Manning Seamount (montagne marine),
Manning Seamount Group (montagne marine),
Manning Seamounts (montagne marine),
Manokwari Trough (canale),
Manowari Trough (canale),
Mansell Bank (riva),
Mansfield Dome (collina),
Manus Trench (fossa),
Manus Trough (fossa)Mapmaker Seamounts (montagne marine),
Mapmakers Seamounts (montagne marine)Mar del Plata Canyon (canyon),
Marabaut Shoal (scogliera),
Marabout Shoal (scogliera),
Maralie Reef (scogliera),
Marcala Seamount (montagna marina),
Marchand Seamount (montagna marina),
Marchant Seamount (montagna marina),
Marchi Seamount (montagna marina),
Marcus-Necker Ridge (montagne marine),
Marcus-Necker Rise (montagne marine),
Marcus-Necker Seamount Chain (montagne marine),
Marcus-Wake Seamount Group (montagne marine),
Marcus-Wake Seamount Group (montagne marine),
Marcus-Wake Seamounts (montagne marine),
Marcus-Wake Seamounts (montagne marine),
Margai Seamount Group (montagne marine),
Margesson Shoal (scogliera),
Margetts Seamount (montagna marina),
María Magdalena Rise (pendio),
Mariaani Süvik (fossa),
Mariaanien Hauta (fossa),
Mariana Basin (bacino),
Mariana Basin (bacino),
Mariana Ridge (cresta),
Mariana Trench (fossa),
Mariana Trough (canale),
Mariana-kaikō (fossa),
Marianas Ridge (cresta),
Marianas Trench (fossa),
Marianergraven (fossa),
Marianskiy Zhelob (fossa),
Marie Byrd Seamount (montagna marina),
Marie Celeste Fracture Zone (zona di frattura),
Marie Louise Bank (scogliera),
Marie Reef (scogliera),
Marie Shoal (scogliera),
Marie Shoal (scogliera),
Marietta Seamount (montagna marina),
Marivelas Reef (scogliera),
Mariveles Reef (scogliera),
Markarov Deep (bacino),
Markham Canyon (canyon),
Markov Guyot (altopiano),
Marlin Rise (pendio),
Marmara Trough (canale),
Maro and Dowsett Reefs (scogliera),
Maro Reef (scogliera),
Marosszeky Gap (apertura),
Marosszeky Passage (apertura),
Marquesa Fracture Zone (zona di frattura),
Marquesas Fracture Zone (zona di frattura),
Marquises Fracture Zone (zona di frattura),
Marsala Bank (montagna marina),
Marsala Seamount (montagna marina),
Marseille Canyon (canyon),
Marshall Seamount (montagna marina),
Marshall Seamounts (montagne marine),
Marsili Seamount (montagna marina),
Marti Canyon (canyon),
Marti Seamount (montagna marina),
Martin Seamount (montagna marina),
Martino Seamount (montagna marina),
Marty Canyon (canyon),
Marvin Ridge (sperone),
Marvin Spur (sperone),
Marvinrücken (sperone),
Maryland Seamount (montagna marina)Mascarado Reef (scogliera),
Mascarene Basin (bacino),
Mascarene Plain (pianura),
Mascarene Plateau (altopiano),
Mascarene Ridge (altopiano),
Mascarenes Basin (bacino),
Mascerene Ridge (altopiano),
Maskarenskaya Kotlovina (bacino),
Maskarenskiy Khrebet (altopiano),
Mason Canyon (canyon),
Massif Sous-marin Central de Barents (pendio),
Massif Sous-marin de Borodino (cresta),
Massif Sous-marin de l’ Académie des Sciences de l’URSS (pendio),
Massif Sous-marin de l’ Institut d’Océanologie (pendio),
Massif Sous-marin de Manihiki (altopiano),
Massif Sous-marin de Perseus (pendio),
Massif Sous-marin de Schatsky (pendio),
Massif Sous-marin de Sierra Leone (pendio),
Massif Sous-marin d’ Obroutcheff (pendio)Matakoa Seavalley (valle),
Matakoa Valley (valle),
Mataró Canyon (canyon),
Mathematician Seamount Range (montagne marine),
Mathematician Seamounts (montagne marine),
Mathematicians Seamount Group (montagne marine),
Mathematicians Seamounts (montagne marine),
Matheson Bank (riva),
Mathmatician Seamount Range (montagne marine),
Matinicus Basin (bacino),
Matsubara Seamount (montagna marina),
Matsubara-kaizan (montagna marina),
Matsushima Hole (foro),
Matsuye Bank (scogliera),
Matthew Ridge (cresta),
Mattison Basin (bacino),
Mattole Canyon (canyon),
Mattole Submerged Valley (canyon),
Matua Ridge (montagne marine),
Matua Seamount Chain (montagne marine),
Matua Seamounts (montagne marine),
Matuye Bank (scogliera)Maud Bank (montagna marina),
Maud Rise (pendio),
Maud Seamount (montagna marina),
Maudbanken (montagna marina),
Maures Escarpment (scarpata),
Maurice Ewing Bank (altopiano),
Maurice Hill Ridge (cresta),
Mauritania Canyon (canyon),
Mauritius Basin (bacino),
Mauritius Trench (fossa),
Maury Channel (canale marino),
Maury Deep (fossa),
Maury Mid-Ocean Channel (canale marino),
Maury Seachannel (canale marino)Mawson Bank (riva)Maxwell Fracture Zone (zona di frattura)Maya-maya Shoal (),
Mayor Sea Valleys (valle),
Mayor Seavalley (valle),
Mayor Valley (valle)Mazarrón Escarpment (scarpata),
Mazatlán Basin (bacino)
Coordinate Geografiche