Abstract: Tuna are separated from dolphins who often travel together by temporarily stunning the tuna and allowing the dolphins to continue on course. The tuna stunning is accomplished by creating underwater sounds of a selected frequency range which has a maximum impact on the tuna and a minimum impact on the dolphins.
Type:
Grant
Filed:
January 7, 1997
Date of Patent:
July 14, 1998
Assignee:
Nature's Own Research Association
Inventors:
James L. Oschman, Nora H. Oschman, Keith E. Sommer