Cannonball jellyfish (Stomolophus meleagris) are common in the southeastern coast of the United States especially during autumn and summer.
The cannonball jellyfish (Stomolophus meleagris), also known as the cabbagehead jellyfish, is a species of jellyfish in the family Stomolophidae. They are common on the southeastern coast of the United States, including the Gulf Coast. On the southeast coast they are extremely abundant in the fall and summer months. 
