Oops, I missed this one! Another awesome Eevee viewport demo by Daniel Bystedt.
Daniel writes:
I'm doing some testing of the upcoming Eevee viewport for Blender 2.8. This is bug creature that I've made in order to test the realtime screens space subsurface scattering in Eevee. Great job by blender 2.8 viewport dev team. Thanks to Clément Foucault for implementing this great feature!