Method and apparatus for separating dolphin from tuna

Details Method and apparatus for separating dolphin from tuna Method and apparatus for separating dolphin from tuna

1992-01-30

1994-09-27

Bradley, P. Austin

Fishing, trapping, and vermin destroying

Fishing

Nets

43 171, 367139, A01K 7902, H04B 102

Patent

active

053497740

ABSTRACT:
A method and apparatus for using the primordial fear of dolphin of killer whales to separate dolphin from tuna. The sound of killer whale is recorded, digitized, edited and enhanced to produce digitally synthesized killer whale sounds. These digitally synthesized sounds of one or more feeding killer whale is played under water and in the vicinity of a mixed school of dolphin and tuna and as the dolphin leave said vicinity, catching the tuna in nets. A playback unit is selectively triggered on and off from a remote location.

REFERENCES:
patent: 3524276 (1970-08-01), Thomas et al.
patent: 3872472 (1975-03-01), Moschgat
patent: 4105992 (1978-08-01), Luciano
patent: 4563759 (1986-01-01), Hayakawa
patent: 4646276 (1987-02-01), Kowalewski et al.
patent: 5117572 (1992-06-01), Parra
patent: 5134592 (1992-07-01), Parra

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