9 of the world's most extreme lakes

Check out the biggest, deepest, saltiest and all-around strangest bodies of water Earth has to offer.

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Taal Lake Taal Lake (Photo: saiko3p / Shutterstock)

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Double take lake

Taal Lake on the island of Luzon in the Philippines contains an island, which contains a lake, which contains another island — and the innermost lake on the island also holds the title of “largest lake on an island in a lake on an island.” Talk about mind-bending! This Wikipedia photo might help you wrap your brain around it all:

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