Scuba diver in the blue ocean watching a shark as it approaches
Japan flag

Okuna Second Reef

Tokunoshima, Oshima County, Japan

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Temperature

-

Max depth

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Logs

Madagascar flag

Olaf Sakatia

Madagascar

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Temperature

-

Max depth

-

Logs

Philippines (the) flag

Olang Sanctuary

Maria, Siquijor, Philippines

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Temperature

-

Max depth

-

Logs

Philippines (the) flag

Old Anchor

Mabini, Batangas, Philippines

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Temperature

-

Max depth

-

Logs

Australia flag

Old Cleaning Station

Australia

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Temperature

-

Max depth

-

Logs

United States of America (the) flag

Old Garden Beach

Rockport, Essex County, United States

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Temperature

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Max depth

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Logs

Spain flag

Old Harbour Wrecks

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Temperature

-

Max depth

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Logs

Egypt flag

Old House Reef Makadi Bay

Red Sea, Egypt

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Temperature

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Max depth

-

Logs

Cayman Islands (the) flag

Old Issac’s

Cayman Islands

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Temperature

-

Max depth

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Logs

United States of America (the) flag

Old Kona Airport

Hawaiʻi County, United States

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Temperature

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Max depth

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Logs

Curaçao flag

Old Quarry Golf Course

Curaçao

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Temperature

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Max depth

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Logs

Saint Kitts and Nevis flag

Old Road Bay

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Temperature

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Max depth

-

Logs

Philippines (the) flag

Old Volcano

Catarman, Camiguin, Philippines

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Temperature

-

Max depth

-

Logs

United States of America (the) flag

Old Waddell Dam West Wall

Peoria, Maricopa County, United States

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Temperature

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Max depth

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Logs

New Zealand flag

Old Wharf

New Zealand

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Temperature

-

Max depth

-

Logs

Australia flag

Old Woman Island

Sunshine Coast, Queensland, Australia

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Temperature

-

Max depth

-

Logs

Northern Mariana Islands (the) flag

Oleai

-

Temperature

-

Max depth

-

Logs

Cabo Verde flag

Olho Azul (Blue Eye) Cave, Sal

Sal, Cape Verde

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Temperature

-

Max depth

-

Logs

Maldives flag

Olhuveli House Reef

Malé Atoll, Maldives

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Temperature

-

Max depth

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Logs

Italy flag

Olivetta

Liguria, Italy

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Temperature

-

Max depth

-

Logs

United States of America (the) flag

Olowalu Reef

United States

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Temperature

-

Max depth

-

Logs

Philippines (the) flag

Olympia Maru

Coron, Palawan, Philippines

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Temperature

-

Max depth

-

Logs

Germany flag

Olympia Regattaanlage Oberschleißheim

Oberschleißheim, Landkreis München, Germany

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Temperature

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Max depth

-

Logs

Germany flag

Olympia Regattaanlage Oberschleißheim (Süd)

Munich, Bavaria, Germany

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Temperature

-

Max depth

-

Logs

Saudi Arabia flag

Om Jezwy

-

Temperature

-

Max depth

-

Logs

Egypt flag

Om halhalla

Red Sea, Egypt

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Temperature

-

Max depth

-

Logs

Egypt flag

Oma Sukan

El Quseir, Red Sea, Egypt

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Temperature

-

Max depth

-

Logs

Maldives flag

Omadhoo Thila

South Ari Atoll, Maldives

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Temperature

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Max depth

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Logs

Japan flag

Omato Beach

Wakasa, Mikatakaminaka County, Japan

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Temperature

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Max depth

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Logs

South Africa flag

Omega Rock

South Africa

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Temperature

-

Max depth

-

Logs

Australia flag

Omeo Wreck Dive Trail

Western Australia, Australia

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Temperature

-

Max depth

-

Logs

Philippines (the) flag

On the Rocks

San Juan, Siquijor, Philippines

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Temperature

-

Max depth

-

Logs

Spain flag

Ondartxo

-

Temperature

-

Max depth

-

Logs

Netherlands (the) flag

Onderwater Natuurpark Zegersloot

Alphen aan den Rijn, South Holland, Netherlands

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Temperature

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Max depth

-

Logs

Fiji flag

One Bay

Fiji

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Temperature

-

Max depth

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Logs

Tanzania, United Republic of flag

One Palm

Tanzania

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Temperature

-

Max depth

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Logs

Maldives flag

One Palm Finolhu

Malé Atoll, Maldives

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Temperature

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Max depth

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Logs

Malaysia flag

One Tree Bay

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Temperature

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Max depth

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Logs

Maldives flag

One Way TIcket

North Nilandhe Atoll, Maldives

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Temperature

-

Max depth

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Logs

Sint Maarten (Dutch part) flag

One step beyond

Sint Maarten

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Temperature

-

Max depth

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Logs

Jamaica flag

Oneils Reef

Negril, Cornwall County, Jamaica

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Temperature

-

Max depth

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Logs

Cyprus flag

Oniro (Edro III)

The Edro III Shipwreck, Pegeia, Cyprus

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Temperature

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Max depth

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Logs

Japan flag

Onna Point

Onna, Kunigami, Japan

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Temperature

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Max depth

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Logs

Indonesia flag

Onong’s House Reef

North Sulawesi, Indonesia

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Temperature

-

Max depth

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Logs

Germany flag

Oortkaaten

Hamburg, Germany

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Temperature

-

Max depth

-

Logs

Netherlands (the) flag

Oost-Watering

Veere, Zeeland, Netherlands

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Temperature

-

Max depth

-

Logs

Australia flag

Opera House

Australia

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Temperature

-

Max depth

-

Logs

United States of America (the) flag

Ophelia Briant (Wreck)

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Temperature

-

Max depth

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Logs