You must have heard about underground river, but have you ever heard of an underwater river?

Yes, you read that right. An underwater river.

Some of the most incredible places on Earth are those that are hidden from everyday view. This unbelievable site is located in a water-filled cave – or cenote (pronounced say-no-tay) – in Mexico’s Yucatan Peninsula. What appears to be an underwater river flows placidly through the cave, offering up one of the most stunning sights ever captured in underwater photography.