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Dummy acoustic fish tag (attached to 1977-30 Pt2), 1975-77.
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 tag.
Details
- Category:
- Oceanography
- Object Number:
- 1977-35
- Materials:
- electronic components, mercury, metal (unknown) and plastic (unidentified)
- Measurements:
-
tag: x 52 mm x , 20 mm,
label: 3 mm x x , 16 mm,
- type:
- tag
- taxonomy:
-
- information forms
- labels (identifying artifacts)
- credit:
- Ministry of Agriculture, Fisheries and Food
