Ive been thinking about this a little bit lately and did a quick google search tonight. Very interesting thought if you compare what makes us like a certain song or style of music. There is something in the frequencies we hear that appeals to us. It would be interesting to see if there are any direct correlations between certain frequencies attracting specific species.
While the research paper referenced seems to take an angle of sound used for navigation, i.e. submarines, there are interesting concepts as to the variables of pressure, temperature and salinity.
http://www.fas.org/man/dod-101/navy/docs/fun/part08.htm8.4 SPEED OF SOUND IN THE SEA
From physics it will be remembered that when gas is the transmitting medium, the denser the gas, the slower the speed of sound, and yet the speed of sound in water is about four times greater than that in air. Although this seems contradictory, it is not, because there is another more important factor that influences the speed of sound. In truth, the speed of sound is determined primarily by the elasticity of the medium and only secondarily by the density.
8.4.5 Sound Speed Equation
Dealing with these three factors to arrive at values for bulk modulus and density, and thence sound speed, is very cumbersome. To overcome this, numerous empirical relationships have been developed for converting the three factors directly to sound speed. A simplified version of such sound speed equations developed by Wilson in 1960 is present below.
c = 1449 + 4.6T + 0.055T2 + 0.003T3
+ (1.39 - 0.012T)(S - 35) + 0.017d (8-11)
where
T = temperature in degrees Celsius
S = salinity in parts per thousand
d = depth in meters
Given accurate temperature, salinity, and depth data, this equation is accurate within 0.6 meters/sec, 96 percent of the time. By way of contrast, the equation for the speed of sound in air is approximately
c = 331.6 + 0.6T
In making calculations involving the transmission of sound through the sea, it frequently is adequate to use a standard speed rather than the more accurate value given by equation 8-11. Although in seawater c can vary from a low of about 1,420 m/s to over 1,560 m/s depending on environmental conditions, a standard speed of 1,500 m/s may be assumed for computation purposes unless otherwise noted.