Hello Alan and Ray
there are a lot of fishes that can produce sounds, about a third of known species can produce sounds, most of then produce it with help of the swimmbladder. The most known are of the groups of Scianidae and catfishes. They can be very loud.
Many other acautic animals produce sound, the pistol crabs kill they prey with sound and if you are near you believe someone is shoting a gun.
Best wishes
Jürgen
--- Jay K. Jeffries <bottomgun@mindspring.com> schrieb am So, 21.2.2010:
Von: Jay K. Jeffries <bottomgun@mindspring.com>
Betreff: RE: [PSUBS-MAILIST] revelation
An: personal_submersibles@psubs.org
Datum: Sonntag, 21. Februar, 2010 14:30 Uhr
Alan, No it is actually a fish also known as drums or hardheads (you made me do some research on the web: http://en.wikipedia.org/wiki/Sciaenidae ). There is also a description of how they make the sound. R/Jay From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Alan James
Sent: Sunday, February 21, 2010 4:43 AM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] revelation >Alan, >It is the most prevalent “noisy” fish on SONAR throughout the world…you just call it something different. J >R/Jay Yeah A "FROG" Alan
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