[Edgeworth swims to the bottom of the lagoon and examines its floor simply to get a better sense of whether his vision under such circumstances is any different than what he remembers human vision being like at the same light level. And speaking of senses...]

Singing did involve some noteworthy sensations aside from the impulse to make use of it, however. I could somehow sense the power I could draw upon to make it... persuasive. I'm at a loss to describe it.