SAFE SEAAnti-jellyfish Sting Protective Lotion - Sunscreen - Sunblock - Sea Lice - Jelly Fish (SPF50 Kids, 120ml Bottle), SPF50 Kids, 120ml Bottle

I can't say if this kept us from getting stung my sea lice or other jelly fish. I can only say that during our hour of snorkeling in the Caribbean, we didn't get stung once. I can say that as a sun block, this worked very well. Neither of us got the least sunburned. The only down side is that this goes on very white and it's a bit hard to smooth in. It doesn't seem to affect its effectiveness at all, but it does look rather messy. Still, it does work, and that is what we considered important. If it had worked as well but had not been so messy looking, I would have rated it 5 stars.

It's very thick, but I think that's a good thing--it just takes some time to get it all rubbed into your skin. A darker-skinned person (like my husband) might look a little like they're in white face until it is good and blended. At the end of an 8-day Caribbean cruise, we still had plenty left, even though I was putting it on constantly throughout the day. We did not encounter any jellyfish, so I don't know whether or not it works, but because it's so thick, I think it probably will -- especially with the little bitey shrimpey things that come out at night and make surfacing after a night dive really painful.

Pricey, but this is Great stuff when the no-see-ums are out in the water. I live at the beach and always have a bottle on hand. Sometimes I use it after swimming to calm the sting.

Purchased for a Disney Cruise after reading comments from others about sea lice at Castaway Cay. I can't say for sure if this product prevents stings as I'm not sure if there were even sea lice in the area when we visited. Regardless, none of us were stung nor sunburned after using. For those reasons, I would recommend Safe Sea Protective Lotion if you are concerned.

I spend my winter in Florida but since last year I have started getting a terrible reaction to jellyfish. I was so disappointed about not being able to go into the ocean again. This product has definitely helped. It’s a very heavy sunscreen that I put all over my torso under the bathing suit and it seems to work.