We are the planet Earth, in spite of the fact that the greater part of the surface is covered by water.

Life in our planet depends on the hydrological cycle.

A layer of vapour surrounds the whole planet.

At sunset, in spring, the mountainsides are a silvery colour.

After travelling a lot of kilometres the river changes the landscape.

They are the great stores of nature. The basis of everything is the little algae, diet of lots of molluscs, insects, crustaceans and fish.

Water is the universal dissolvent. It gets into everything carving abysses, canyons or karsts.

Man has designed mechanisms to supply himself with water when it is scarce.

This is the frontier between two worlds, the water’s surface.

With the arrival of winter, the landscape becomes a frozen desert.

Rain forms temporary pools and lagoons that dry out with the arrival of summer.

By its absence or its presence water marks life, the strategies for survival of animals and plants.

Humidity monopolises the atmosphere. Water overflows everywhere and more than half of the rain goes back to the clouds by the transpiration of the leaves.

The salt forests are one of the most fascinating ecosystems. Trees with roots in the water forming galleries of branches where all kinds of creatures find refuge.

Estuaries have the capacity to provide food for billions of living beings.

Apart from the sea, there are salty waters where the living conditions are exceptionally hard, like the salt mines, the salt marshes and other extremely saline places.

Sand and water make a good combination. When the tide goes out a micro cosmos awakens with thousands of inhabitants.

Wave after wave, the sea unloads part of his formidable energy.

The sea hides creatures that defy the imagination. It’s a world apart, one which is different and mysterious and poses many questions for us.

On its way, the sea finds the cliffs.