Ocean Floor Entrance

The Ocean Floor Entrance is the magical portal that can lead from the surface of the Ocean Realm to the underwater region known as the Ocean Floor in Spirit Tracks. It is a stone archway shaped like the head of a fish that will only rise above the ocean's surface when three special Crystal Switches are activated via train whistle all around the Ocean Realm.

It is this portal that will reveal the section of the Spirit Tracks that lead down into the depths of the ocean and to the lone entrance of the Ocean Temple deep beneath the surface. Those that pass through this portal are magically protected from drowning underwater either as a result of this portal or perhaps by means of the magic that is infused into the Spirit Tracks. Link is forced to seek a way to enter the Ocean Temple when he goes on a quest to restore the Tower of Spirits to its former state and thus he finds he must reach the Ocean Floor in order to do so. He eventually learns from Carben, the guardian Lokomo of the Ocean Realm, of the three Crystal Switches that are necessary to be activated in order to make the Ocean Floor Entrance appear and successfully locates them to reopen the way to the depths and ultimately the Ocean Temple.