Northeast Atlantic coast: tiny, harmless, translucent sea creatures from two to three inches across that resemble
jellyfish but do not actually sting their food.
Southeast Atlantic coast: usually about six to
eight inches in diameter, a jellyfish that is mildly venomous and identifiable by its four pink horseshoe-shaped markings.
Northeast Pacific coast: up to about fifteen inches in diameter, a jellyfish that doesn't have the long tentacles usually
associated with its kind but a short fringe that sweeps food to its mucous layer right under the bell.