I'm having a hard time getting two minikits. One that the minikit detector points to the top of the submarine/boat, and another in the underwater section that seems to be a Sandman portal I cannot find. Anyone can help with this?
The underwater minikit you must get while driving the minisub thing around in the water. Just lower the sub by holding B. I think you can't get it after you finish the sub puzzle though, because I think you lose access to the controls for the sub after finishing the puzzle.