Danube Delta, Romania
At 2,845 km, the Danube is Europe's second longest river. In Romania, it flows into the Black Sea, where it forms a 5,000 km2, hardly accessible delta, a habitat for thousands of animal and plant species. This image was taken by the MOMS sensor - a perfect instrument for studying ecosystems and an important aid for improving analysis of how humans impact nature. False colours make it very easy to distinguish water areas (red) and vegetation (blue).