Off The Coast Of Florida, A Diver Comes Face To Face With A Massive Shark I've been diving for nearly 20 years. If this had been me, I'd have sh!t myself whilst shrieking like a little girl. Crikey. Even though Moore has a lot of shark experience, this wasn’t the most pleasant encounter for him because bull sharks aren’t the nicest sharks to meet. In fact, along with great white sharks and tiger sharks, this is the most hazardous shark species. These colossi may reach heights of up to 11 feet and weigh up to 1,500 pounds.