Board Thread:Naruto Discussions/@comment-26636534-20160527151459/@comment-24824148-20160603025546

Thekillman wrote: DaisukeDivine wrote: Wasn't it specifically stated that his body was deep in the water and too much pressure to get it. Yes.

Edo Tensei probably can't exist at kilometers of depth. The pressure at a kilometer would be 100 atmospheres (so 100x normal pressure). Since a normal human can't survive this, one can make the argument that this counts as damage for an Edo Tensei. When damaged, they reconstitute. Logically there's a barrier below which Edo Tensei are not functional since they continuously get damaged and regenerated.

A great white set a diving record for a kilometer deep, but sharks in general do not seem to go beyond a few hundred meters (for the simple reason of pressure).

So yea, Jiraiya being a kilometer under would be very problematic, even in the Narutoverse.

Add on to the fact that they don't even have the tools to retrieve his body even if you wanted to hold on to the belief that his body was indeed intact.