Fresh water meets sea water: Nature's intriguing phenomenon

It looks like magic, but it
It looks like magic, but it's a natural phenomenon taking place where rivers meet the sea. The visible boundary line hides two different salinity levels.

What is the chemical composition of sea water?

The top 10 ocean issues

Boyan Slat: the campaigner for cleaner, plastic-free oceans

The 10 deepest parts of the ocean

The portable device that desalinates and purifies water without

Why is the ocean salty?

Boyan Slat: the campaigner for cleaner, plastic-free oceans

What are edible water bottles?

Cigarette butts are the largest source of trash in the world's oceans

Kelly Slater and Will Ferrell want to move the ocean