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|Patagonian shelf, Patagonian slope and the Scotia Sea water area are parts of the southwest of the Atlantic Ocean.
The coast of the South America borders with wide zone of rather shallow Patagonian shelf which from the east side passes into oceanic channel through Patagonian slope. There is archipelago of Falkland (Malvinas) Islands in shallow water’s center. From the south South America borders with original area of the Scotia Ridge which separates it from the Antarctic continent. The Scotia Ridge is extended on 3 thousand km. in latitude and consists of three segments: North Scotia Ridge, South Sandwich Ridge and South Scotia Ridge.
Northern Scotia Ridge is basically underwater. Above the sea level there is only South Georgia Island. Southern Scotia Ridge is basically underwater too. Above the sea level there is only South Orkney Islands. They are have similarity in geological structure to Antarctic Peninsula and South Shetland Islands. Inside Scotia Ridge there is located the Scotia Sea deep-water depression the width of which is more than 600km. Scotia Sea deep-water depression is the eastern continuation of Bellingshausen Basin, which located in the southeast part of the Pacific Ocean. They are joined through Drake Passage, but they are separated by underwater threshold, which situated on the depth less than 2 km. This threshold extends in the southeast direction from the southwest border of Tierra del Fuego to the last east island of South Shetland Archipelago.
|There are following species of Decapoda:|
|Infraorder BRACHYURA||Infraorder NEPHROPIDAE|
|Falkland (Malvinas) Islands.|