Final answer:
Hannibal famously used pots filled with live snakes as weapons to create chaos and gain the upper hand during a sea battle against Eumenes of Pergamon.
Step-by-step explanation:
One creative thing that Hannibal did during a sea battle was the use of snakes as weapons. He ordered live snakes to be collected and then placed into pots. During a naval engagement with the fleet of Eumenes of Pergamon, these pots were hurled onto the enemy ships. The surprise and chaos caused by the sudden appearance of the vipers allowed Hannibal to gain a tactical advantage and win the battle.