We have spent a lots of lovely, good times in that area. Love La Azohia, Isla Plana, Puerto Mazarron and Bolnuevo.Heaven forbid - in the sea!
I have often wondered if the sea is affected at all, by the geo thermal properties that led to some of the naturally heated and mineralised "Spa " pools in that area.
They are so lovely to swim in, floaty, and are reported to be very helpful for some skin and joint problems.
Personally, I think the sea and swimming are very good for these also, just wish "our" climate was better suited, as it in Spain.
Enjoy your swimming.
A tad envious.. lol
Margaret