Jellyfish with eight foot tentacles have been spotted in the Island?s waters ? and experts warn they can pack a serious sting.

The Department of Conservation Services warned yesterday that there have been several sightings of Stinging Cauliflower Jellyfish over the past weekend. The jellyfish ? sometimes called ?Stinging Blubbers? in Bermuda ? can cause stings similar to those of a Portuguese man-of-war.

The specimens are usually blue or purple and can grow as large as three feet, though the ones seen around Bermuda appear to be averaging 12-18 inches. Their tentacles can grow as long as ten feet. This type of jellyfish has not been seen in Bermuda?s waters in recent years. It is believed that a large number of MoonJellies, which the Stinging Cauliflower Jellyfish eat, has led to their resurgence.

The Department advised swimmers to keep an eye out for them and steer clear of them, particularly as their tentacles are so long.

If someone is stung pouring vinegar on the affected area will help ease the soreness. However, the Department noted that severe stings can cause muscle cramps and breathing difficulties and recommended people seek medical attention if they feel these symptoms.