Wild Wave, Los Cabos, Baja California, Mexico (click pic to enlarge)
link

Birth of baby whale

The umbilical cord has a weak part which snaps, normally tail-first birth, the newborn rises to the surface.

Hat tip to PZ Myers at Pharyngula blog.

Polarized Vision on water surface

Glare due to light hitting water surface can be reduced by filtering through a polarized lens. Professor (Geol. ret.) Don Garlick explains this phenomenon here:
http://www.northcoastjournal.com/issues/2008/06/05/polarized/

Nature has an abundance of forms and flavors. Vision in animals may filter for color, ultra-violet, infra-red, polarized, transparency, fluorescence, rhythmic flashing, wing-eye-spots etc.