It’s perfectly normal for the CDG (Cave Diving Group) which are the specialist UK cave divers. All to do with geology, there’s very few big diveable caves in the UK unlike Mexico or Florida. Most UK cave diving is sump diving requiring caving to get to the sumps. This is wholly unsuited to the DIR style equipment such as large cylinders, long hoses, canister lights, or other commercial equipment. The CDG are famous for making their own kit, such as Rick Stanton's motorcycle inner tube he uses as a BCD.I was curious about the scuffed knuckles... so cave divers don't wear gloves? It was one of the first things I noticed... what's the reason behind this? Also I noticed the yellow fins and masks... also seemed odd since I figured most cave divers would want black... and also short fins, not recreational dive fins... just looked weird to me and I've been wanting to ask around. Thanks.
Much of the UK's sump diving is summed up as diving through a sump to cave on the other side. Cavers who dive.