22.5° with 11.25° for the partials.

This model was designed from the base of Bodo Haag’s turtle as part of a challenge. The crease pattern for his base is included below.

There aren’t very many 22.5 degree turtle designs with shell patterns (I can only think of two off the top of my head) so I’m quite happy.

Big thanks to Crascodyllea for being the inspiration to go all the way and get all the details.

If this model wasn’t so terrible to fold it might be my favorite of my designs to date.