Did Humans Descend from "Aquatic Apes"? 
A Straight Dope column criticizing the aquatic ape hypothesis.
http://www.straightdope.com/mailbag/maquaticape.htmlRiver Apes
Promotes a variation on the aquatic ape theory that suggests humans evolved from two hominids that were adapted to a water-side habitat.
http://www.riverapes.com/
Aquatic Man and African Eve
Two electronic books written by Denis Montgomery. The books may also be downloaded in PDF format.
http://www.sondela.co.uk/
Aquatic Ape Theory: Sink or Swim?
A critique of the aquatic ape theory, with examples refuting the basic premises of the theory.
http://www.aquaticape.org/
Aquatic Ape Theory and Speech Origins: A Hypothesis
Paper by Marc J. M. Verhaegen, published in Speculations in Science and Technology.
http://users.ugent.be/~mvaneech/Fil/Verhaegen_Language_SpeculationsScienceTechnology.html
Water and Human Evolution
Papers from a symposium at University Gent, Flanders, Belgium.
http://users.ugent.be/~mvaneech/Symposium.html
Evolution, A Suitable Case for Treatment
A New Scientist article critical of the Aquatic Ape Theory.
http://www.newscientist.com/article/mg12917525.300.html
