I can't take credit for the design, I found it on another site. It's a great model with a ton of detail! I printed it vertically with 0 infill and 2 shells.
I've uploaded the basic .STL model and also a mesh mixed version for a rep2 height and a Z18 height.
Original file found here:
http://www.cgtrader.com/free-3d-models/animals/fish-aquatic/great-white-shark--3