Habe dies gerade aus dem CPH Forum gefischt:
A lot of talk about jelly fish! And yes there are jellyfish that sting right now at Amager Beach Park, BUT all water in the laguna shifts in 24 hours, and therefor, so does the jelly fish. There is nothing we, or nobody else in the world, can do about jellyfish in the ocean (!), but we will keep a close eye on the situation. On training swims we recommend vaseline - on hands, feet, face and neck - which keep the stinging from happening
All the best, and see you all soon
/Challenge Copenhagen
Ich würde mir nicht zu viele Sorgen wegen der Quallen machen. Einfach ein wenig mehr Vaseline zum Einsatz bringen. Aber natürlich nicht an den Händen. 
