Attraction of Free-Ranging Sharks by Acoustic Signals in the Near-Subsonic Range.
Abstract
Series of extensive field experiments were conducted over the deep waters of the Florida Straits and the Tongue of the Ocean, Bahamas to provide information on the differential attractiveness of various acoustic signals in the near sub-sonic range (10 to 20 Hz, 20 to 40 Hz, and 40 to 80 Hz) to free-ranging silky sharks (Carcharhinus falciformis) and oceanic whitetip sharks (C. longimanus). Ambient noise measurements were accurately determined in the study areas. Findings included ambient noise determination from 10 to 1000 Hz, demonstrated preferential attraction by sharks to sounds having a frequency spectrum between 10 and 40 Hz, and behavioral information on both species of sharks, attracted. A summary of all studies on the acoustic attraction of sharks is included in the discussion.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1975
- Accession Number
- ADA021724
Entities
People
- A. Peter Klimley
- Arthur A. Myrberg Jr.
- Charles R. Gordon
Organizations
- Rosenstiel School of Marine, Atmospheric, and Earth Science