Drowning is the leading cause of death for tourists in national parks. Still, almost anything can be secure. It is important to understand that the types of water bodies available in national parks are not the same as what you would normally do.
Natural water bodies are quite different from pools: Coldwater; there are currents that can quickly take you away with them; or there may be dangers hidden underwater, such as immersed trees and sudden drainage. Even the strongest swimmers have needed rescue or even drowning because they have been drowned.
Wearing a life jacket can save your life, which is also the main purpose of life jackets. That is why it is highly recommended that everyone should wear a life jacket whenever they are near, open, or in the water: when walking, swimming, fishing, boating, or in any other water-related activity.
You may not have time to put on your life jacket if you run into water hazards, slip while fishing, or fall off your boat.