Spatial orientation in echolocating harbour porpoises (Phocoena phocoena)
Ursula K. Verfuss, Lee A. Miller, and Hans-Ulrich Schnitzler
J Exp Biol 2005;208 3385-3394
http://jeb.biologists.org/cgi/content/abstract/208/17/3385?etoc
Mechanisms underlying the production of carapace vibrations and associated
waterborne sounds in the American lobster, Homarus americanus
Heidi Pye Henninger and Winsor H. Watson, III
J Exp Biol 2005;208 3421-3429
http://jeb.biologists.org/cgi/content/abstract/208/17/3421?etoc