Ok I had to Google this because I've never seen anything on squid intelligence. Octopus and cuttlefish, yes. Looks like squid got more going on than I'd previously thought.
I still need some convincing on decapods though.
Also, do you like own Lemmy or something? You're EVERYWHERE.
Dunno about legal, but I'm pretty sure the scientific bar for sentience is pretty low. You basically just have to have senses (e g. hearing, sight, etc) and react to stimuli to be sentient.
Doing this to any animal—regardless of sentience—is straight fucked up. Nothing says selfish like torturing an animal to death so it tastes better. Make it quick.
I'm vegetarian, so I'm not defending this at all, but as I understand it, boiling kind of is the best way to kill a lobster quickly. A friend of mine had a roommate who thought otherwise and tried to decapitate one for dinner. I don't know their biology well, but there's something about lobsters' brains spanning the length of their body, so it wouldn't die. Just horribly suffering and bleeding everywhere with a knife through its body. Tossing it in boiling water should near instantly kill it. All the water inside their shell steams immediately.
I mean, yeah. The bar for sentience is very low. Sapience is a lot higher of a bar.
People have shown that plants can be sentient after all (they can feel pain at least, IIRC). So it makes sense that almost any multicellular organism above a certain amount of cells would be sentient.