The Fish predator/prey database (stomach database) contains data covering 11 countries. A total of 217 399 stomachs are reported in the North Sea data. Eight predator species were analysed and 854 NODC prey codes have been reported

Birds (terns) and prey fish are sampled at several locations along the Belgian coast. Fish are counted and measured. Stomach content analyses and length measurements are performed on seabirds. The results are recorded in this database.