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By Sabri Ben-Achour
Ok so heading to the bay - just gonna check the weather - sunny with a 90% chance of jellyfish?
"They do hurt," says Chris Brown, an oceanographer with the National Oceanic and Atmospheric Administration. He helps create a map where you can see and forecast where the jellyfish are.
"It shows you on a color map from blue, which is low probability, to red, which is high probability of encountering sea nettles," he says.
Sea nettles are the main type of jelly in the bay: 6 inches wide and several feet long.
The map works by taking real-time measurements of salinity and temperature and figuring out where the jellyfish would be most comfortable, and that's where they almost always turn out to be.
You can find the map here.