Simplify the following text for a Grade 7 native English-speaking person.
Original: It consisted of a group of islands lying in a shallow lagoon called the Bight of Acklins , of which the largest are Crooked Island in the north and Acklins in the south-east , and the smaller are Long Cay ( once known as Fortune Island ) in the north-west , and Castle Island in the south .
Simplified: Acklins and Crooked Islands was a district of the Bahamas until 1996 , and as Acklins , Crooked Island and Long Cay until 1999 . ( The islands are located at )