Cross Rift is a special reef formation found in Ciceros Strait. As it's name suggests, there is a crack in the rocks in the shape of a cross. It is the only place in the game where Bottlenose Dolphins can be found (this includes the Albino Bottlenose Dolphin that the player befriends later in the game). Within the rift itself , there are several shoals of smaller fish, as well as the Libra Coin.
The Rift can be entered either through the top or through a small entrance on the Southern side of the rock formation, at coordinates F-6.