Sometimes they both want to look out the hole at the same time but it’s not big enough so they smoosh their heads together. The shrimp can’t even see because he is blind.
Are all pistol shrimp blind or is Mario special?
All pistol shrimp are relatively blind. I think he can see light and maybe vague shapes, but he relies on his antennae and the goby to find his way around and get food. He always has one antenna touching something and he feels around with his claws a lot, it’s really neat to watch