You are already spotting them, so here is the article to bookmark so that you can check out the situation for yourselves!
Check out the 'Meduza' (Jellyfish) website by clicking here. You can even download an app (Android) to stay up to date and with a quick registration, you can help everyone and report sightings yourself in real time!
Don’t let it the jellyfish put you off a beach day though – just keep a look out for them!