[Sora looks up and he nods.]

That does look like a shell! I dunno I think we've gotta open it up to check. Uh, how are we gonna open it, though?

[He swims down a little ways away and finds another shell that looks similar. Both of the shells are a bit sparkly but they don't look sparkly enough...

As he searches through the sand he does find what looks like... an old drum? How did a drum get down here? It's not rusted, though.]

Hey! Look what I found! It's a drum? Like the musical kind?