There are rivers and lakes at the bottom of the sea.

Wacky WorldOceans

Brine pools are extremely salty water that is denser than seawater, so it settles on the seabed with visible “shorelines”.

Another wacky fact → All facts

Explore more Wacky World facts

Whale songs can last hours.The ocean produces around half of the oxygen we breathe.Sound can travel thousands of kilometres through the ocean.