ST. MARY’S CITY, Md. – Jellyfish, also know locally as nettles, remain out of sight and out of mind for many delighting in the waters of the St. Mary’s River. With so much rain, salinity remains low, around 9 ppt. This keeps jellyfish at bay, making the waters all the more inviting to swimmers. Safety is not guaranteed, however, as vibrio remains a prevalent concern. Vibrio is a type of bacteria that can cause vibriosis. Symptoms of vibriosis include cramping, chills, fever, and/or skin infection. In some cases it can be fatal. Those eating raw seafood or entering the water with open cuts are most at risk of contracting vibriosis. Please remain safe and exercise caution in enjoying the waters and delicious yield of our river.