Scientists uncovered a "Lost City" deep underwater in the Atlantic Ocean that could prove the existence of extraterrestrial ...

The Last Reef takes us on a global journey to explore the connection of our cities on land with the ocean's complex, parallel world of the coral reefs beneath the sea.

There are no showtimes for The Last Reef: Cities Beneath the Sea. You can stream it or buy it on digital platforms below.

Baiae was the Las Vegas of the Roman Empire – the place where the rich and powerful came to carry out their illicit affairs. However, over several centuries, the city slowly sunk beneath the sea.

Megacities on the coast have already sunk below sea level and more are set to ... until the practice of extracting groundwater from beneath parts of the city was halted and Venice also experienced ...