RI DEM Issues Warning for Atlantic Bay Nettle Jellyfish in RI Waters

RI DEM Issues Warning for Atlantic Bay Nettle Jellyfish in RI Waters

The RI Department of Environmental Management (RIDEM)is warning swimmers about the dangers of jellyfish in Rhode Island waters, especially in the Charlestown waters.

The RIDEM Warning states

Please be advised — DEM's Division of Marine Fisheries Biologists have been monitoring a high abundance of Atlantic Bay Nettle Jellyfish in Ninigret Pond in Charlestown.

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Bay nettles are often present during high summer in Rhode Island as water temperatures rise. They are most common in the salt ponds in South County. 

Although their sting is not fatal (unless there is a severe allergic reaction), it can cause moderate discomfort and itchy welts. If stung, recreators can follow these first aid tips:

- Remove any visible tentacles carefully, with a gloved hand or a plastic bag. 

- Rinse the affected area in vinegar or a commercially-available sting spray, or if not available, saltwater. Do NOT rinse with freshwater, as this can worsen the sting. 

-You can also apply a heat pack or rinse the sting under hot water to inactivate the venom. An ice pack and hydrocortisone cream can be applied to help with discomfort. 

-If symptoms worsen, seek medical attention and contact the Rhode Island Department of Health.

RIDEM encourages the public to use common sense and caution. RIDEM urges those who plan on recreating in the coastal ponds this summer are encouraged to carry a first-aid kit with vinegar in case of a jellyfish encounter. Their numbers are expected to decline over the course of the summer.

Other species of jellyfish are less of a concern, like moon jellyfish (flat disc-shaped with very short tentacles), and comb jellyfish, which have no stingers at all.

To report sightings, please email [email protected] or call 401-423-1923 with details.