Why are teenagers who jump into the sea seen as a problem? They aren't harming anyone, they aren't shoplifting or stealing, and they are not taking drugs.

And, if the water is deep enough and they know what they are doing, it isn't dangerous.

Brighton and Hove City Council has tried to stop the jumping - by putting up notices, which have been used as targets for stone-throwing and are now bent and battered.

Teenagers have always taken risks and always will. And all sea activities contain an element of risk, which is part of their attraction and value.

So how about applying common sense? As this isn't an activity authorities can stop, the first thing needed is a depth marker on the side of the groyne to indicate when the water really is too shallow to jump into.

But why not provide proper diving facilities? These could be supervised by the duty lifeguard and be locked out of use when conditions are unsuitable.

There is obviously money for this kind of thing - last week, the Brighton City of Sport campaign had a high-profile launch on the seafront. Surely this kind of project would fit perfectly with this initiative?

As far as safety is concerned, it is more important to do something about speedboats and jetskis, which have operated virtually unchecked this year and really are a hazard to other people, operating well inside the buoyed areas.

I am told the council's patrol ends at 5.30 so the speed merchants wait till then before they come out endangering people wanting to have their swim after work.

The authorities should get their priorities in order.

-Henry Law, Brighton