Gastrulation animation, in 3D, because it's the best way to understand it.
So what is gastrulation?
Gastrulation is the process from bilaminar to trilaminar embryonic disc - from epiblast + hypoblast to ectoderm + mesoderm + endoderm. Join us in attempting to simplify part of the complex topic that is embryology.
#3D_Embryology
As always, questions and corrections welcome in the comments below.