Goal of this one was to suggest shape and form without any "hard" lines. The geometry around the eye proved quite difficult, I forgot to pronounce the gills more (you can see a hint of a hint of a suggestion of them in front of the fin), and the mouth could be better, but I was happy to convey the gray/white shades on the body! If I were to do this again, I'd use a less aggressive outline and try to strengthen the contrast some more.

Reference image

Edit: Corrected the reference image