I'd choose the mammal.

With your see through skin -- the kind of skin you can see through.

I'm not sure if this lobster has been cooked, but I know it's not in its shell anymore. Take a look... a good hard look. I don't know why it's disturbing. Maybe it's disturbing that I've eaten nothing but microwave burritos for the past two days. Maybe it's disturbing because I've had nothing but microwave burritos for the past two days.

There is a reason you failed chemistry.

I bet I could survive having my junk radiated for 5 minutes and 12 seconds. Anything I would try to add would dilute the pith. Click these gonads for lots more terror and fun!