In Florida, rough waters, at times, claim the life of divers. In Miami Dade, Florida, Miami Dade Police reported that at diver (Antonio Gonzalez), age 24, recently drowned near the Fowey Rock Lighthouse near Key Biscayne, Florida. He was diving with two friends at the time.
I grew up in Miami and went snorkeling from time to time in and around Key Biscayne. Fortunately, I did not encounter any unexpected weather or ways. I also tended to swim close to shore and safety.
Since weather and waters can be very unpredictable, it is important to take safety precautions when diving, snorkeling, or swimming in Florida waters. While not all drownings are preventable, a great many can be avoided by take the appropriate safety precautions while participating in water related / swimming / diving activities. Boaters and swimmers should pay close attention to weather condition and always act on the side of caution and safety.
You can read more about the drowning in Miami Dade County at Diver Drowns Near Key Biscayne, Florida.