Yes, they are, but why not minimize any possible pain? They’re not going to taste any different.
The way to go is oysters. They have no pain receptors or even a cluster of nerves that could be considered a rudimentary brain. You can eat them still alive (raw on the half shell) and they’re none the wiser.
kautau@lemmy.world 5 hours ago
Whether or not they feel pain is a huge ongoing debate
en.wikipedia.org/wiki/Pain_in_crustaceans