Have you ever had emerged from a stuffy, overcrowded subway car and craved a snack that’s cool, crisp and soothing — something to refresh that stressed-out straphanger palate, perhaps? For when a fresh fruit smoothie or frozen yogurt just won’t cut it, commuters in Nanjing, China, have the option of purchasing crustaceans — specifically live hairy crabs (scrumptious!) — from refrigerated vending machines placed throughout the city’s metro stations.