Mr. Bliss, if you wanted to visit my swimming spot, here are the directions (and anyone else, I guess).
Take bus # 1,7, or 9 - but not 1-1, 7-1 or 9-1. Get off at the harbour, turn left at the intersection. You could go straight for a more scenic route, but turning left is a little shorter.Turn right here (the brown sign is for the lighthouse).
Here is it. I like to swim around the rocks - and there are more further from shore -but also to jump off them.
There is some bad news, though. The water seemed clear yesterday, but I don't know if the barges will churn up the bottom with their dredging. I also don't know why they are dredging here.
Previous posts on swimming there here.