Jack spent some time dueling the lone Stinging Eel. He could have finished it fast using magic as he did with the first two, but instead, he insisted on melee. Fighting melee against the water denizens was extremely difficult. Jack could see now that melee players were seriously handicapped for battling underwater.
He did not give up though. He was not a good swimmer, but he still knew the basics. Even though the underwater breathing mechanism in this game world was unrealistic, the movement was real enough. Most of the time when he wanted to change position, it was done using kicks. His high strength and dexterity stats allowed him stronger kicks to move faster, but they were difficult to control. He couldn't stop or change direction anytime he wanted to.