Simplify the following text for a Grade 9 native English-speaking person.
Original: Nearby Hibernia Reef , 42 k northeast of Ashmore Reef , is not part of the territory , because it has no permanently dry land area , although large parts of the reef become exposed during low tide .
Simplified: Nearby Hibernia Reef , 42 k Northeast of Ashmore Reef , is not part of the territory , but belongs to Western Australia . It has no permanently dry land area , although large parts of the reef become exposed during low tide .