Bimini is a district of the Bahamas and consist of two main islands located 50-miles east of Florida. Bimini is surrounded by shallow reefs near shore, the depth increases to 80 to 100 feet before dropping into the abyss of the Gulf Stream. Bimini is a group of small islands in the Bahamas. Bimini is only 50 miles east of Miami Beach, Florida. Bimini has three main islands: North Bimini and South Bimini. These coral islands are small, only 7 miles long and only 200 yards wide at their narrowest.