Up to sixteen colour channels, plus polarised light.
Human vision
Mantis shrimp vision
An impression only: more colour bands than our screens can show.
What's going on
Where you have three cone types, a mantis shrimp has around twelve to sixteen photoreceptor classes and reads the polarisation of light. Nobody can truly render that - this is an artistic impression of a far wider colour space.
Field of view
You: ~190°
Mantis shrimp: ~360°
Approximate horizontal field of view, seen from above. The dot is the head.