It is impossible to know anything for sure. You can just go with what is the most plausible within our current knowledge. Jellyfish posses a very simple nervous system, even less complex than that of insects. Personally I don’t think it’s possible for them to suffer but since there is no reason to be cruel to them why should I endorse it?
At this time it is impossible to know if they feel pain. They’re a living creature.
It is impossible to know anything for sure. You can just go with what is the most plausible within our current knowledge. Jellyfish posses a very simple nervous system, even less complex than that of insects. Personally I don’t think it’s possible for them to suffer but since there is no reason to be cruel to them why should I endorse it?