Effectiveness of Acoustic Signals in Attracting 3Blue-Water3 Sharks to the Immediate Vicinity of an Underwater Sound Source.
Abstract
Three experimental studies were carried out in the field to determine the effectiveness of various acoustic signals in attracting free-ranging sharks into the immediate vicinity of an underwater sound source. These studies were carried out over deep water in the Florida Straits, miles from the mainland, or at a moored buoy in the Tongue of the Ocean, Bahamas. All of the octave bands of noise used in the tests resulted in attraction, with the level of attraction increasing as the frequency spectrum decreased. Irregularly pulsed signals were also more attractive than regularly pulsed signals, with the latter increasing their attractiveness as the pulse rate increased. Various behavioral actions of individual sharks, after approaching a sound source, are described. Also various practical considerations, arising from the findings, are discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1971
- Accession Number
- AD0732051
Entities
People
- A. A. Myrberg Jr.
- J. Banbury
- S. J. Ha
- S. Walewski
Organizations
- Rosenstiel School of Marine, Atmospheric, and Earth Science