Blastoise Printable Edition
thingiverse
I found this same file online everywhere, which leads me to believe that it's potentially a rip from a game. I just added some blocks and cylinders into the hydro-cannons(?) to make less likely to break and easier to print.
Download Model from thingiverse
With this file you will be able to print Blastoise Printable Edition with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Blastoise Printable Edition.