"Azterkosta" is the name for the Basque Country of the European program "Coastwatch Europe" (http://coastwatch.org/europe/about/).
Coastwatch Europe (CWE) is an international network of environmental groups, universities and other educational institutions, who in turn work with local groups and individuals around the coast of Europe. CWE primarily protects wetlands by raising public awareness of their value and demonstrating practical ways to save them.
The goal of CWE is the protection and sustainable use of coastal resources.

Our pupils brought water samples from different streams in the town and in the countryside and from the beach and they proceeded to analyse them.
Results showed that water has too many phosphates causing excessive growth of algae. Excessive growth of algae harms water quality, food resources and habitats, and decreases the oxygen that fish and other aquatic life need to survive.