Another comparison. Still of Dennis Hall's video showing the knob-like protrusions on top of the head with the animals nose just going into the water, compared to our sonar image.
Spectrogram of Echolocation recorded, August 2018
July 8, 2017
A still from a video I captured at approx.:6:11 PM
Location:Near the mouth of the Winooski River
A while back I made a reconstruction of what Champs head would look like by many gathered eyewitness reports. I was enhancing the Bodette footage from 2005 and to my surprise you can clearly see after the enhancement the uncanny similarities between the reconstruction I did and actual head of the animal in the Bodette footage.
Champ Head reconstruction: Many eyewitness reports describe a crown (two bumps) on the top of the head, Loose skin that covers eyes (hood), Large eyes, knob protrusions on its neck, sharp teeth (primarily for eating fish), lighter underside coloring (counter-shading).