In the Danish town of Skagen, which is known as a major center of tourism and a place for rest among the rich and famous people, there is a strange attraction that makes the town very popular.
A unique natural phenomenon is the place where two currents of Baltic and North Seas meet. This mysterious natural wonder has clearly formed boundaries outlined by the sea foam. Indeed, it seems that the end of the world is there, it is scary and nice at the same time.
The answer to quite trivial question about this mystery is following: the water of North and Baltic Seas has different density; therefore, it never mixes together. The waves constantly fight against each other, but for centuries they never merge into one.