Annual reminder / information for those who don't know. If you're off to the coast this year be careful.
Weever fish are not (usually) deadly but having trodden on one a few years ago I can tell you that their sting is extremely painful and not something i ever wish to experience again.
They are not just in the water, they may also be in the sand - its not like a jelly fish where you can see it coming - the first you'll know of stepping on a weever fish is what feels like a sharp prick followed within a few minutes by agonising pain which may well shoot up your leg.
If you or one of your children tread on one, you need to get the foot into the hottest water they / you can bear for as long as you can manage it. It will help. Also look for spines in your foot and pull them out with tweezers as they carry on pumping out venom for a bit. Life guards will know what to do if they're about.
Have a lovely summer and maybe get some beach shoes 