Random vertices on a disk and a sphere, joined to their closest relative, then interpolated between the two states, rotated.

This was more trouble than I thought it would be because I really wanted the edges to interlace.

Shader-based generation of the terrain. Quick and dirty 3D noise + domain warping. Just for fun. Realtime is a little different each time. http://tannerrogalsky.com/demoloops/loop065/

A wireframe mesh transformed by 3D perlin noise. The realtime demo is a little different every time.