broken plate optical illusion!
broken lobster disk optical illusion | created by Gianni A. Sarcone
If you strongly concentrate on any of the lobster's eyes, after some time it will seem that the broken piece of the plate rejoins the rest ..... that means, the outermost broken black circle should appear as non-broken circle.
Sarcone explains : this amusing effect occurs because our brain tends to iron out broken lines. Did you manage to get this work?