Effects of Seals on Fisheries

Information is presented on the effects of seals on exploited fish resources, and the fisheries on them in Scottish waters (with special reference to salmon) during the period 1959-1975.

This note presents information on the damage to fisheries by seals following main headings:

1. Direct damage to fishing gear and to fish in the catch.
2. Predation by seals of fish in the sea.
3. Effects on the survival and/or "quality" of fish by parasites of which the seal is the final host.