Question - What is the so-called “clinging jellyfish”?
Answer- The cited resource notes “The Clinging Jellyfish (Gonionemus vertens) is a small hydrozoan jellyfish that grows to about 15 - 25 mm (1 inch) in diameter and can be found in bay and estuarine waters.” In addition, “Clinging jellyfish are native to the Pacific Ocean. They were introduced to the eastern Atlantic Coast as early as 1894 in Woods Hole, Massachusetts, but can be found from Maine to New Jersey as well other areas around the world. Clinging jellyfish thrive in temperate regions, specifically in sheltered shallow bay and estuarine waters where tides are not strong enough to dislodge them.” The sting of the clinging jellyfish can produce severe pain and other localized symptoms. However, reactions may vary based on an individual's sensitivity to the toxin. According to recent literature, no fatalities have been documented for this species.” (https://www.nj.gov/dep/docs/clinging-jellyfish-factsheet.pdf; accessed June 2019)