Cannonball jellies are identifiable by their maroon bell and the obvious cannonball shape. They have short tentacles that are actually part of the digestive system, giving rise to the name “many mouthed hunter.” While they do have stinging cells, or nematocysts, they lack the long tentacles that many other jellyfish have. As a result, though the toxin can cause problems for people, they rarely sting. If, like me, you just can’t help touching dead stuff that washes up on the beach, be sure to wash your hands. Some websites say the cells embedded in the mucus can really irritate your eyes or even cause cardiac problems.