Board Thread:Naruto Discussions/@comment-26636534-20160527151459/@comment-734582-20160601112200

Namikazenaruto9 wrote: Doesn't matter if HUMANS can't reach Like i said, these kinds of depths are reached with specialized equipment. The Naruto world doesn't have that. so we can assume they use jutsu to reach similar depths, but if Kabuto had jutsu that far exceeded real-life capacity, he would've dug up Jiraiya's body.

Hence:


 * the lake/sea (apparently the only difference is whether it's connected to the oceans) doesn't have to be as deep as people think.
 * The lake/sea doesn't have to be as big as people think.

Since Kabuto has showed no Shark summons, that argument is invalid.