Acoustic fish tag, c 1976.

Image number: 10284084

Acoustic fish tag, c 1976.

Acoustic tags allow fish to be identified and tracked for relatively long periods, to show how they respond to environmental phenomena such as tides. Tags comprise a receiver and transmitter which returns the sonar signal to the tracking ship. The tag is attached to the fish by a thread and a conventional Peterson tag.

Image number:
10284084
Credit:
Science Museum/Science & Society Picture Library
Date taken:
20 October 2003 12:28
Image rights:
Science Museum