Like the cannonball, the mushroom has no tentacles, however, it possesses long finger-like appendages hanging from the feeding apparatus. The mushroom jelly does not represent a hazard to humans. Probably the most widely recognized jellyfish, the moon jelly is relatively infrequent in South Carolina waters. It typically reaches 6-8 inches in diameter, but some are known to exceed 20 inches. The moon jelly is only slightly venomous.
Contact can produce symptoms from immediate prickly sensations to mild burning.
Pain is usually restricted to immediate area of contact. Cyanea are generally considered moderate stingers. Symptoms are similar to those of the moon jelly, however, usually more intense. Pain is relatively mild and often described as burning rather than stinging. The sea nettle is frequently observed in South Carolina waters during summer months.