A weekend training session in Costa Brava, one hour drive from Barcelona where I was visiting for work.
I jumped into the water first, only to find an entire ocean of jellyfish!!!
Luckily those "fried egg" jellyfish (Phacellophora camtschatica) are rather friendly. They don't sting and cause no harm to humans!
It was like some sort of outer space movie scene - the whole experience was surreal! I couldn't take my eyes off them...!