Luoghi in Caratteristiche Undersea che comincia con la lettera "a"

> as

Astoria Deep-Sea Channel (canale marino), Astoria Deep-Sea Fan (fan), Astoria Fan (fan), Astoria Seachannel (canale marino), Astoria Submarine Canyon (canyon), Astrid Ridge (cresta), Astrolabe Reefs (scogliere), Astrolabe Trough (canale)

> at

Atacama Graben (fossa), Atacama Trench (fossa), Atakamskiy Zhelob (fossa), Atakapa Basin (bacino), Atka Basin (bacino), Atka Canyon (canyon), Atka Seamount (montagna marina), Atlantic Antarctic Basin (bacino), Atlantic Indian Swell (cresta), Atlantic Ridge (cordigliera), Atlantic Scotia Ridge (cresta), Atlantic Seamount (montagna marina), Atlantic-Antarctic Ridge (cresta), Atlantic-Indian Antarctic Basin (bacino), Atlantic-Indian Basin (bacino), Atlantic-Indian Ridge (cresta), Atlantic-Indian Rise (cresta), Atlantin-Intian Selänne (cresta), Atlantis Canyon (canyon), Atlantis Cordillera (cordigliera), Atlantis Fracture Zone (zona di frattura), Atlantis II Fracture Zone (zona di frattura), Atlantis II Seamount Group (montagne marine), Atlantis II Seamounts (montagne marine), Atlantis Seamount (montagna marina), Atlantis Terrace (terrazza), Atlantis-Great Meteor Seamount Chain (montagne marine), Atlantis-Plato-Cruiser-Great Meteor Seamount Group (montagne marine), Atlantisk-Indiska Ryggen (cresta), Atlantiska Centralryggen (cordigliera), Atwater Valley (valle)

> au

Aubert de la Rüe Seamounts (montagne marine), Auckland Islands Ridge (sperone), Auckland Islands Shelf (ripiano), Aucklands Escarpment (pendio), Aucklands Slope (pendio), Aucklands Spur (sperone), August Canyon (canyon), Ault Peak (montagna marina), Auribeau Seamount (montagna marina), Auriga Seamount (montagna marina), Aurora Bank (riva), Aurora Bank (scogliera), Aurora Reef (scogliera), Austell Spur (sperone), Austin Basin (bacino), Austraalia-Antarktika Kerge (cresta), Austral Fracture Zone (zona di frattura), Austral Ridge (montagne marine), Austral Seamount Chain (montagne marine), Austral Seamounts (montagne marine), Australian Antarctic Basin (bacino), Australian Antarctic Ridge (cresta)

> av

Avalon Knoll (collinetta), Aveiro Canyon (canyon), Aveiro Valley (canyon), Avenzoar Bank (riva), Aves Apron (riparo), Aves Ridge (cresta), Aves Rise (cresta), Aves Swell (cresta), Avilés Canyon (canyon), Avon Canyon (canyon), Avons Deep (canyon), Avstralo-Antarkticheskaya Kotlovina (bacino), Avstralo-Antarkticheskaya Vozvyshennost’ (cresta), Avstralo-Antarkticheskoye Podnyatiye (cresta)

> aw

Awanui Seavalley (valle), Awanui Valley (valle), Awatea Seamount (montagna marina), AWI Bank (riva)

> ax

Axar Fjardar Dyb (valle), Axarfjardardjúp (valle), Axarfjarðardjúp (valle)

> ay

Ayers Seamount (montagna marina), Ayu Trough (canale), Ayugadak Canyon (canyon), Ayungin (scogliera)

> az

Azore Bank (riva), Azoren-Schwelle (cresta), Azores Plateau (altopiano), Azores Ridge (cresta), Azores Rise (cresta), Azores Seamount (riva), Azores-Biscay Rise (pendio), Azores-Cape Saint Vincent Ridge (cresta), Azores-Gibraltar Ridge (cresta), Azur Fan (fan)

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