Water dome? Big shark tank? Oh no what ever can they do? Even though it wouldn't make sense for them to drown, seeing as who their respective animals could be amphibious.
Reverse summon and then use an attack on his water dome to kill him.
Jirayah can set the water on fire, with oil...in think Naruto can too
Orochimaru can poison the water with manda, and kill him. Same with Sasuke among other attacks , lightning
Tsunade. And Sakura can turn the water into acid and burn him alive, send a current through it and paralyze him, then punch him, or even send Katsuyu in the water and have her melt and heal him to death.
No how will you guys counter what I have said?