Stone crabs have their claws torn off when they are still alive. Even though they can re-generate their claws , 41% of crabs die from a single amputation and 63% of crabs die from a double amputation.
If one does not have a voice to scream against pain and suffering that does not mean that the individual does not feel pain, when tortured.
Invertebrates have too sense organs, like other animals.
They are also our friends and we do not eat our friends!
Best regards, Venus