Tracking fish by sonar to prevent over-fishing

Tracking fish by sonar to prevent over-fishing

By Julie Sors

Source: EUREKA

10/14/2003

Marine researchers and scientists have long sought a practical way to track the position and migration of fish in the world's oceans in order to provide research data for stock management and fish conservation.

Sigmur Gudbjornsson, Managing Director of Stjornu-Oddi, the Icelandic lead partner in EUREKA project E! 2326 GPSFISH, describes how they solved the problem by having ships "transmit by sonar GPS (global positioning satellite) data which is then stored on any fish that has been previously tagged within a 5 km range."

Atlantic cod

Salmon, Atlantic

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