The sharks are visitors to central Florida 's east coast . They live in a 10-mile area off the coast of Brevard County . The mauve stinger rays are small but ` ` pretty potent , '' scientist says .
The jellyfish are visitors to central Florida 's Atlantic beaches . They congregated in a 10-mile stretch off the coast of Brevard County . The mauve stinger jellyfish are small but `` pretty potent , '' scientist says .