Orderable in: Japan
These gelatinous swimmers have been around for a little over 500 million years, making them the oldest multi-organ animal outfitted with stinging tentacles. They secrete a neurotoxin designed for defense and capturing prey, and although stings aren't fatal to humans, they hurt like hell. A delicacy in Japan, the jellyfish is typically caught, dehydrated, rehydrated, and served with vinegar and vegetables in a salad. Delish!