Light and strong currents are two of the most important factors in the surface areas near the coast, the beat of the waves against the rocks allows the algae to have a constant renewal of water.

Algae are classified into three large groups according to color. Green algae or chlorophytes, red algae or rhodophytes and brown algae or Phaetophytes.

The algae being vegetable like the terrestrial plants present their same needs, that is to say, water with contributions of mineral salts and light to be able to realize the photosynthesis, to grow and to reproduce itself.

But algae unlike terrestrial plants do not have roots because they take the water and mineral salts of the sea through their entire stem, also do not need trunk, the sea provides sustenance, or leaves as they perform photosynthesis through Of its whole body, nor flowers, since its reproduction is done in the middle of the sea.

The algae have great ecological importance, since they are the base of the trophic network in the sea and the contribution of oxygen to the atmosphere by these is greater than that of the terrestrial vegetation. It also serves as a shelter for many animals, both invertebrates and vertebrates.

The importance of algae does not end there, since also for humans are very useful in agriculture, livestock, gastronomy, pharmacology and medicine.
In algae meadows like the one we see in this aquarium it is not difficult to find fish swimming around or browsing the algae. Some develop a great musculature to be able to swim against the currents of the sea and others have more stylized forms to hide between the algae and the rocks and to avoid being dragged by the currents. Similar to that of sardines are not much appreciated gastronomically.