We were last at CN in March 2011. As usual every day was spent in the sea, however on that trip many people including myself were getting jellyfish / hydroid stings. Some people had little / no issues whilst some of us had a nasty reation. They formed straight lines of raised red blisters that really hurt and took a couple of weeks to fade. We were diving, however swimmers were also getting stung.
We are back at CN in just over 2 weeks and wondered if they are a problem at the moment. I will be prepared - diving with hood, gloves, full lycra, but was hoping to swim in my shorts between dives. I'm always happy to "play the fool", however wearing my diving hood as I paddle in the sea will not only look silly but will be far too hot.
Ian (and Vanda)