The highly toxic warty jellyfish (pelagia noctiluca) are often found in Virgin Islands waters in the summertime, and swimmers are warned to avoid contact with them.
A release from the Planning and Natural Resources Department Friday said the pinkish-colored jellyfish are 0.75 to 1.25 inches in diameter and have a shallow, dome-like shape.
A sting by one of the marine animals can cause localized pain, redness and welts. The release stated that anyone stung should not rub or touch the affected area, as such pressure will release more stinging cells beneath the skin's surface.
Anyone who has a severe reaction, such as pain all over the body or difficulty breathing, should seek medical attention immediately, the release said.
Planning and Natural Resources officials recommended that anyone swimming in areas where warty jellyfish have been sighted wear a wet suit or other protective body covering.
For more information, call the Fish and Wildlife Division at 775-6762.