There was something amazing on the TV on Sunday night (I think it was) when, during a short part of a wild-lfe programme devoted to cave diving (maybe 5 minutes' diving) there was no mention of difficulty, danger, threat to life and limb or any such nonsense ? just  some interesting stuff about cave diving in Cuba.

do you know which channel ?

BBC4

Just watched on iPlayer John. Thank you for pointing it out. Only slightly interrupted by L.... saying "I didn't see that" or "I saw lots of dead crabs".

I've also seen this one hah. Thanks