Jellyfish Addition/Substitution

I think adding a jellyfish mob would be so cool. It would light up water and glow, like a glow squid does, but if you get too close it will sting and hurt you, like a cactus. I thought it would be cool to have another underwater mob that could hurt you, and if designed right, jellyfish could be beautiful. They could also potentially replace glow squids, since they glow the same way and could drop glow ink or an item that functions the same way. It’s just a suggestion, but I really liked the idea!