Published by Australian Academy of Science
Useful sites | Sounding out the secrets of the sea

Discovery of sound in the sea (University of Rhode Island, USA)

Provides information about the properties of sound, animals and sound, audio and technology galleries, and the use of sound in water by man.
http://www.dosits.org/

An ocean of sound: An exploration of underwater acoustics (Oceanlink, Canada)

Provides an introduction to underwater sound, describes echolocation and the vocal abilities of some whales and seals.
http://oceanlink.island.net/oinfo/acoustics/acoustics.html

Sounding out the ocean's secrets (Beyond Discovery, National Academy of Sciences, USA)

Discusses the history and development of sonar.
http://www.beyonddiscovery.org/includes/DBFile.asp?ID=88

Killer whales: Senses (SeaWorld Busch Gardens, USA)

Looks at the senses of the killer whale, using diagrams to explain how they hear and use echolocation.
http://www.seaworld.org/animal-info/info-books/killer-whale/senses.htm

Looking at the sea: Physical features of the ocean (Ocean’s Alive, The Museum of Science, USA)

Describes common geographical features found under the sea off the coast of continents and the measurement of ocean depths using sonar.
http://www.mos.org/oceans/planet/features.html

Impacts of marine acoustic technology on the Antarctic environment (Scientific Committee on Antarctic Research, Australia)

A technical summary of the use of marine acoustics in Antarctica, its potential impact on animals and strategies to reduce the impact.
http://www.geoscience.scar.org/geophysics/acoustics_1_2.pdf