Naval history is full of fatal accidents and wartime losses. Even knowing that, it's astonishing to think that, according to a United Nations report, there are more than 3 million shipwrecks on the ocean floor. Of course, most of them will languish, unexplored and invisible forever, but, fortunately for us, many of them have been cataloged and photographed. These are some of our favorites.

19th century shipwreck in northern Gulf of Mexico.

Photo: NOAA Okeanos Explorer Program


The wreckage of the American Star (SS America), Fuerteventura, Canary Islands.

Photo: Wollex/Wikimedia Commons

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The Dimitrios, at Laconia (near Gythio, Greece).

Photo: N1RK4UDSK714/Wikipedia


LST Wreckage, submerged in waters of West Loch near Waipio Peninsula, Pearl City, Honolulu County, Hawaii.

Photo: Library Of Congress

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Coastal steamer LAL-KI wrecked on Point Augusta, Alaska, c1917.

Photo: Library Of Congress


The infamous Costa Concordia lies stricken off the shore of the island of Giglio, Italy.

Photo: Tullio M. Puglia/Getty Images


Ushuaia harbour, Tierra del Fuego, Argentina.

Photo: Teo Romera


Off the island of Gramvousa, Crete, Greece.

Photo: Joachim S. Müller


Bay of Praia, Cape Verde, Africa.

Photo: David Gil


One of many shipwrecks around Port of Spain's Harbour, Trinidad And Tobago.

Photo: Mark Morgan


Quail Island, New Zealand.

Photo: Greg Hewgill


The Maheno Shipwreck at Fraser Island, Australia.

Photo: Régis Matthey


Hawaii.

Photo: pmm3


Winds Raking the husk of the SS Gairloch, Oakura, Taranaki, New Zealand

Photo: Dave Young


Panama.

Photo: Al Butler


Remains of the SS Falcon, Langdon Bay, Kent, United Kingdom.

Photo: Squirmelia


Olivia. Ushuaia, Argentina.

Photo: *christopher*


Roatán, Islas de la Bahía, Honduras.

Photo: Steve Lyon


Shipwreck on the Mississippi, Lasalle, St. Louis, MO, US.

Photo: Paul Sableman


Western Sahara.

Photo: David Holt


Tarfaya, Morocco.

Photo: camera_obscura [busy]


Where ships go to die: Ushuaia, Argentina.

Photo: *christopher*


Ushuaia, Argentina.

Photo: Jason Jones


Wrecked ship on the beach, Guam.

Photo: leevin3


The Peter Iredale, Oregon.

Photo: Sarah Lynch


Jafrabad, Chittagong, Bangladesh.

Photo: Stéphane M. Grueso


The Lundoge and many more died at the infamous Shipwreck Beach, Praia Santiago, Angola.

Photo: mp3ief


The Panagia F. at Shipwreck Beach, Praia Santiago, Angola.

Photo: mp3ief


The Mary D. Hume abandoned on the Rogue River in Gold Beach, Oregon.

Photo: Brian Hoffman


Icelandic shipwreck.

Photo: Ron Brinkmann


This list is far from complete. We invite you to add your favorite wrecked ship photo in the discussion section!