UK is mainly caving with just enough diving to clear sumps. You see people with a helmet and a single 3L cylinder. Florida and Mexico are the opposite, the scen

UK is mainly caving with just enough diving to clear sumps. You see people with a helmet and a single 3L cylinder. Florida and Mexico are the opposite, the scene comes out of diving, big and lots of cylinders and/or rebreather is the norm. And no helmets.