Jellyfish Invade St Johns River | Jacksonville News

The St. Johns River is turning into an unexpected jellyfish hotspot thanks to drought and heat pushing salinity levels up—making parts of the freshwater river feel more like ocean. These gelatinous creatures, ranging from mild-mannered moon jellies to seriously stinging Atlantic sea nettles, are thriving in this new environment. Even the infamous Portuguese man o’ war—technically not a jellyfish but a deadly colony—has made an appearance. With no brain or heart, these creatures rely on stinging tentacles for survival, and their bizarre life cycle—from tiny polyps to free-swimming giants—makes them even more fascinating. Don’t touch anything that looks like a jellyfish on the beach—even if it’s dead. Listen in comfort:Get a discount on a Soli Pillow: http://solipillow.com/discount/dnn. Advertise on DNN:[email protected] This is an automated, high-level news summary based on public reporting.Report issues to [email protected]. View sources & latest updates:https://sources.thednn.ai/7c8d12bd8f428917