Watch where and when you swim. While the beaches are great they often harbor rip currents, bacteria, and jellyfish. Always check with the lifeguard stand before heading in if no one is in the water or the waves are rough. Volusia County is known for a high number of shark attacks , so be careful when surfing. Even so, the number of attacks are less than 50, with a fatal attack every 2-3 years, amongst millions of visitors and residents who swim in the ocean. Swimming near dusk and dawn is most hazardous. Never swim in the lakes or rivers unless signs tell you swimming is safe. In Florida, stagnant and slow moving freshwater often has alligators (as well as poisonous snakes). While they rarely attack humans, it's best not to take your chances.