# data[].attributes.attachment_link.description
The continental shelf is an underwater landmass which extends from a continent, resulting in an area of relatively shallow water known as a shelf sea. Much of the shelves were exposed during glacial periods and interglacial periods. The shelf surrounding an island is known as an insular shelf.

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The continental blocks overlapped between South America and Africa.

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Why is this  good evidence for the continental drift?

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Why is this  good evidence for the continental drift?

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This evidence shows that the continent were once attached, and then drifted away from each other.

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What did scientists in the 1960's find out about the edges of the continental shelves?

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What did scientists in the 1960's find out about the edges of the continental shelves?

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The continental shelves overlapped in a few places, and streams deposited large quantities of sediment enlarging the continental shelves creating a better fit between the continents.

# data[].attributes.body
Continental shelf's are the area of seabed around a large landmass where the sea is relatively shallow. (Geographically part of the crust.)