Beginner's Luck. It was my first time using my GoPro+ LCD camera with the head band. I was in a salt water creek at Mile Marker 81.8 in the Florida Keys at Islamorada. Shortly after entering the water this big manatee came shooting past me like a torpedo. Normally manatees swim 3 to 5 mph but this manatee was travelling at least 20 mph, perhaps because he was taking advantage of a very strong current. After the first view at normal speed, you will see the manatee slowed down to 15% speed, and finally you will see the scene again...