Just a quick warning...
DO NOT think your rep/other people warn you about swimming in the sea for no reason because the sea is VERY rough this time of year and the undercurrent is very very strong.
I have just returned from The Neptune and while we was there, an apparently fit English man in his 60's thought better of the advice people had given him and went for a swim in the sea. He lost his life shortly after being pulled under by the undercurrent.
Even after this happened people seemed to think it was still ok to swim in the sea, to me personally its just stupid. The reps dont earn anything by warning you its for your own safety so please please listen to them and stick to the pool!