On a related point, Louise and I have, over the years, dived all over the UK, South coast, Cornwall, Scotland, Red Sea, Sudan, Caribbean and way out in the Pacific. Every where we go we get told to watch out for strong currents which will wash us away to oblivion. I've never yet felt anything like the currents I regularly endure on the Gower and West Wales.

I've always found it comforting. If you can hack it here, it's really good experience when you go somewhere else.