NAME 
Ogotoruk Seavalley: see Ogotoruk Valley 
Ogotoruk Valley 
O-guri: see O Bank 
Ojin Seamount 
Okhotsk Basin 
Okhotsk Plain 
Okhotsk Sea Basin: see Okhotsk Basin 
Okhotsk Valley 
Oki-Daito Ridge 
Okinawa Trough 
Okino Bank 
Okino-se: see Okino Bank 
Okinoyama Bank 
Oki Ridge 
Oki Trough 
Okmuk Canyon 
O-lan An-sha: see Lord Auckland Shoal 
Olbia Terrace 
Olga Basin 
Oliver, Banc: see Oliver Shoal 
Oliver Shoal 
Olyutorski Sill: see Shirshov Ridge 
Olyutorskiy Podvodnyy Khrebet: 
see Shirshov Ridge 
Oman Basin 
Oman Plain 
Omanskaya Kotlovina: see Oman Basin 
Ontong Java Plateau: see Kapingamarangi Rise 
Ontong Java Rise: see Kapingamarangi Rise 
Onyx Reef 
Oost Hinder, Banc: see East Hinder 
Oporto Seamount: see Porto Seamount 
Opouawe Canyon 
Orairuguron Bank: see Orairuguron Seamount 
Orairuguron Seamount 
Oraitilipu Bank 
Orange Canyon 
Orange Cone: see Orange Fan 
Orange Fan 
Orca Basin 
Orchilla Basin: see La Orchila Basin 
Oreti Bank 
Orléana, Banc: see Orleana Shoal 
Orleana Shoal 
Ormonde Seamount 
Ormsbee Bank: see Ormsbee Reef 
Ormsbee Reef 
Orosei Canyon 
Orosei Seamount 
Orosei Terrace 
Orozco Fracture Zone 
I-81 
DESIG. 
valley 
valley 
bank 
seamount 
basin 
plain 
basin 
valley 
ridge 
trough 
bank 
bank 
bank 
ridge 
trough 
canyon 
reef 
terrace 
basin 
reef 
reef 
ridge 
ridge 
basin 
plain 
basin 
rise 
rise 
reef 
shoal 
seamount 
canyon 
seamount 
seamount 
reef 
canyon 
fan 
fan 
basin 
basin 
bank 
reef 
reef 
seamount 
reef 
reef 
canyon 
seamount 
terrace 
fracture zone 
LAT. 
68°00'N 
68°00'N 
36°24'N 
38°00'N 
53°00'N 
52°00'N 
53°00'N 
50°35'N 
23°50'N 
25°30'N 
37°16'N 
37°16'N 
34°58'N 
37°00'N 
37°00'N 
53°50'N 
10°20'N 
41°05'N 
78°20'N 
16°06'N 
16°06'N 
57°30'N 
57°30'N 
23°20'N 
23°00'N 
23°20'N 
1°00'N 
1°00'N 
16°26'S 
51°35'N 
40°40'N 
41°45'S 
7°14'N 
7°14'N 
8°03'N 
32°00'S 
32°00'S 
32°00'S 
26°55'N 
12°00'N 
46°32'S 
7°42'N 
7°42'N 
36°40'N 
0°36'N 
0°36'N 
40°12'N 
39°42'N 
40°00'N 
15°30'N 
LONG. 
165°00'W 
165°50'W 
136°00'E 
170°30’'E 
148°00'E 
149°00'E 
148°00’E 
155°00’E 
133°00'E 
125°00'E 
136°18'E 
136°18'E 
139°35'E 
135°00'E 
135°30'E 
169°21'W 
117°17'E 
10°20'E 
29°00'E 
114°28’E 
114°28'E 
171°00'E 
171°O0'E 
63°00'E 
61°00'E 
63°00'E 
157°00'E 
157°00'E 
146°04’E 
2°40'E 
10°00'W 
175°23'E 
146°07'E 
146°07'E 
147°15'E 
12°25'E 
12°00'E 
12°00'E 
91°20'W 
65°30'W 
168°05'E 
111°45'E 
111°45'E 
11°10'W 
129°57'E 
129°57'E 
~9°54’E 
10°39'E 
11°O0'E 
104°30'W 
