No doubt not to everyone's liking but here it is...
A Little Black Cormorant going under on the hunt.
1DXII 600mm F/4L III 1/1000 f6.3 iso800 +1.7ev HH
Rotated, cropped, S&H, light sharpen in CC2019 PS
I see where you are coming from here Colin. But, unless the eye is showing, I don't think it works. Not an easy shot to get the eye showing, but worth trying for.
I can see why this is not to everyone's liking, but I can also see why you like it. I've always thought that collecting a series of this type of image featuring different species could be neat viewed together. As posted it needs a touch of CCW rotation. If ever you encounter a diving duck in a backlit situation I could see cool stuff coming out of that.