Man plays peek-a-boo with a hippo — mashable.com

Of all the games to play when meeting a hippo underwater, peek-a-boo is not one you’d think of. The most common reaction might be to flee as fast as possible. This diver must have nerves of steel, as he tries to engage the hippo in a game of popping above and below the surface. [Additional reporting by Storyful]

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