Lake Superior

About 350 shipwrecks have been found at the bottom of Lake Superior.

An excerpt from the article 22 facts about Lake Superior
It is estimated that over 10 thousand people have drowned in its waters. The lake is known for not giving up its dead. Because of the low temperatures, the bacteria responsible for decomposing the bodies are not as active as they would be in warmer conditions. Because of the microorganisms' limited activity, drowned bodies tend to sink to the bottom instead of floating on the surface, lifted by the gases produced during decomposition.