original: Still further west is the Tortugas Bank, which is completely submerged.
simplifications: Further west is Tortugas bank, which is entirely underwater. In the west is also the Tortugas Bank, which is underwater. Out west, Tortuga Bank is totally submerged. The Tortugas Bank is under water. Tortugas Bank is even further west. It is completely underwater. Tortugas Bank is still further west. It is completely under. Further west is the Tortugas Banks, which is completely underwater. The Tortugas Bank which is completely submerged is still further to the west. The Tortugas Bank, which is completely submerged, is still further west. Tortugas Bank is still further west ,and it is completely submerged