Summary

I printed Adafruit's Voronoi Squirtle and was really impressed with how well it came out my 3D printer (which is a fused filament type, not SLA machine). Flowalistik's original designs are also really cute and great pieces to print, so a good opportunity to make more!
I was then intrigued by this voronoi method, so watched the excellent video tutorial linked on the original voronoi squirtle page. This was very clear, so I had a try in Meshmixer myself and this is the result!
I scaled up the mesh in Meshmixer then kept the default settings for make pattern -> dual edges.

Print Settings

Rafts: Doesn't Matter

Supports: No

Resolution: 0.1-0.2

Infill: Any

Notes:

I printed with a brim since the base area is very small, but it was easy to rip away after printing.