I'm not aware of any recent news of divers finding a piece of a space shuttle in the Atlantic Ocean in Florida. The space shuttle program was retired in 2011 and most of the orbiters have been put on display in museums around the United States. While it's true that during the history of the program, some pieces of the shuttles fell into the ocean during the flight, those have been recovered. The debris recovery process for the Space Shuttle Program was extensive and thorough, with NASA working with the US Navy and other organizations to locate and recover any debris that fell in the ocean.

It's also important to note that it's illegal to possess or sell any debris from the Space Shuttle without proper authorization from NASA.

I would recommend checking credible news sources, and NASA's website, and also contacting the local authorities to confirm if the information is accurate or not.