--- Nikon has 2 stereo channel ears now ---

Yes! Nikon Unidirectional mic has born!
( Back-electret condenser mic)
Frequency response.......... 70-16,000 Hz
Sensitivity.... -42dB ( 0dB=1V/Pa,1kHz )
Signal-to-noise ratio........ 60 dB or more
Low-cut filter........ controlled by switch
Plug....... Gold-plated, L-shaped, 3.5mm

You can hear the results by clicking here:

Vimeo link (Listen to ME-1 mic?)

Try this or find it onYoutube

ME-1 rough private water sound test