The USS S-16 was an S-class submarine of the United States Navy. She was sunk as a target off Key West, Florida, on April 3, 1945. The wreck is now a popular dive site, and is known for its well-preserved hull and abundant marine life. The USS S-16 is home to a variety of marine life, including fish, coral, sponges, and invertebrates. Some of the most common fish seen at the wreck include angelfish, butterflyfish, damselfish, and grouper. The wreck is also a popular spot for seeing turtles, sharks, and rays.