Tuesday, August 27, 2019

Jellyfish Time

August is jellyfish time. We had a foil session at Kalmus yesterday that was nice, except that we saw lots of jellyfish. Close to the Hyannis Port Harbor, I saw swarms with hundreds of individuals of the Altlantic Sea Nettle:
Sea nettle, Chrysaora quinquecirrha.
Picture by Jarek TuszyƄski / CC-BY-SA-3.0 & GDFL
It's a beautiful little beast, but it gets scary when you see lots of them so close together that they should worry about their tentacles getting all mixed up.

Sure enough, a little while later Nina had a close encounter of the painful kind with one of them. When her foil took a (rare) nose dive and she landed head-first in the water, a sea nettle was there to great her, wrapping itself all around her face and neck. I heard her scream from a few hundred meters away! By the time I got close to her, she was sailing to shore as quickly as she could, and then ran to the snack bar for some vinegar and baking soda treatment (life guards are not on duty during the week anymore, it seems).

When I got to shore, she was nowhere to be seen, but I had an idea what had happened, so I started carrying all our gear up from the beach. Nina was in quite a bit of pain until we got home, and she could take some pain killers and a very long, very hot shower. Hot water helps with the pain, and may denature some of the jellyfish toxin, so she felt a lot better afterwards.

A common "side effect" of sea nettle stings is congestion and sneezing, which was evident even after she took anti-histamines and a decongestant. But she slept through the night, and everything is good again this morning. Fortunately, the local jellyfish are usually more of an annoyance than a real danger - unless you are unlucky enough to have an allergic reaction. I also definitely would not want to fall in the middle of a swarm!

We had northeasterly wind yesterday for the third day in a row. On Saturday, we'd gone foiling in Barnstable Harbor, a very nice session that Nina called "the best foil session ever". She almost foiled through a duck jibe - nice! Sunday had been great, too, with a Duxbury Bay session and wind in the low twenties. I took the slalom gear out for the first time in a while - the Falcon 99 and Racing Blade 7.0 worked quite nicely to get some decent numbers for the monthly ranking in the GPS Team Challenge. I switched to freestyle gear when the tide dropped too low for runs along the entire bay, but got too cold to try anything when the sun went away. Still a great day.

As for jellyfish in Nantucket Sound, we should see a drop in numbers soon. Water temperatures have already dropped from 76 F to 72 F, which should help. However, the full moon at the end of this week may increase the number of jellyfish for another week or two. Also keep in mind that jellyfish are hard to seen on a typical choppy southwest day in Kalmus - when we go foiling on a northerly day where the water is flat and clear, we always see a lot more jellyfish. Right now, there's no way I'd windsurf in board shorts or a shorty!
--
After posting this to Facebook, someone pointed out that he had very good experience with anti-jellyfish sunscreen. I did not even know there was such a thing! But there are several scientific studies about the effectiveness of the "Safe Sea Sunscreen and Jellyfish Protective Lotion". On one study, the cream reduced jellyfish stings by more than 80%; in a second study,  the protective effect was even higher. We've ordered some!