Abandoned secret underground submarine base, Balaklava

Balaklava (Ukrainian, Russian, Crimean Tatar: Baliqlava) is a town in the Crimea, Ukraine which has an official status of a district of the city of Sevastopol. It was a city in its own right until 1957 when it was formally incorporated into the municipal borders of Sevastopol by the Soviet government.
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Alaska SeaLife Center

Anglesey Sea Zoo

Aquarium Barcelona

Aquarium of the Bay

Aquarium of the Pacific

Aquarius (laboratory)

Georgia Aquarium

Lakes Aquarium

Marineland (Ontario)

Maunsell abandoned Army Sea Forts

The Maunsell Sea Forts were small fortified towers built in the Thames and Mersey estuaries during the Second World War to help defend the United Kingdom. They take their name from their designer Guy Maunsell.
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Meoto Iwa

Okinawa Churaumi Aquarium

Peine del Viento

At one end of the Bay in San Sebastian at the foot of Mount Igeldo was where Eduardo Chillida placed his favorite piece of work, the Wind Comb (Peine del Viento), in 1977, with three spectacular pieces of steel anchored to the rocks and surrounded by the sea. This is a magical space, which is a unique example of harmony between art and landscape. The place, according to Eduardo Chillida, is the sole focus of works of art, and is a vital factor that conditions any activity. As the beginning and end of the urban fabric in San Sebastián, the Wind Comb combines the artist’s main concerns but it is the concept of space that stands out most clearly. The artist’s work is not included in a space but the work itself creates the space. “This is a place that, in itself, has attracted my attention throughout my entire life. We all usually have a place like this in our lives...”; “...the place has given me an idea of what I’m going to do”.
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Piper Alpha platform

Piper oil field

The ghost island of Hashima

Hashima Island (meaning "Border Island"), commonly called Gunkanjima (meaning "Battleship Island").The island was populated from 1887 to 1974 as a coal mining facility. The island's most notable features are the abandoned concrete buildings and the sea wall surrounding it.
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Thunder Horse platform