Many fish species live in both fresh and salt water to fulfil their lifecycle, such as sea trout, salmon and eel. If the cycle is not complete they will become extinct and this is exactly what has happened in many places around the North Sea.
If nothing changes, more species will disappear. Hence there is need to take preventative measures to facilitate free fish migration or fish-friendly barriers across regions around the North Sea.
The atlas is based on data and information for the rivers around the North Sea Region (NSR) as well as the North Sea.
Links to Fish Migration Information
Removal of Fish Barriers