Can You Get Sunburned Underwater? Understanding the Risks and Preventing Factors
Ultraviolet (UV) radiation from the sun can cause sunburn, even when swimming in water. This guide delves into the factors that contribute to sunburn underwater and offers strategies for preventing it.
Depth of the Water
The depth of water you swim in plays a crucial role in determining the risk of sunburn. Deeper water typically provides better protection as it absorbs and blocks UV radiation. However, even in shallow depths, about 40% of UV rays can still penetrate the water's surface.
Reflection of the Water
When swimming in water, reflections from the surface of the water can lead to increased exposure to UV rays. Shiny surfaces like concrete, white paint, or metallic objects can reflect UV light, increasing the risk of sunburn.
Time of Day
The time of day you swim is also a significant factor influencing your risk of sunburn underwater. Midday when UV radiation is most intense is when you're most likely to get sunburned.
Sunscreen Protection
Sunscreen is your first line of defense against sunburn. However, its effectiveness diminishes underwater due to the reduced effectiveness of most sunscreens, as they are not designed for use in the water. Swimming can wash off sunscreen, requiring reapplication more frequently.
Prevention of Sunburn Underwater
To prevent sunburn underwater, you should:
- Wear waterproof sunscreen specifically designed for swimming.
- Reapply sunscreen after swimming or sweating every 2 hours, or immediately after towels干燥 off your skin.
- Cover as much of your skin with waterproof clothing, including protective gear like rash guards, hats, and sunglasses.
- Limit your exposure to the sun and swim in shaded areas or under umbrellas.
- If you plan to stay in the water for an extended period, consider wearing a wet suit for better protection.
Despite being submerged in water, you can still get sunburned due to reflected UV radiation from the water and inadequate protection from sunscreen. By understanding the risks and taking preventative measures, you can enjoy the warmth of the water without the risk of sunburn. Always be cautious when spending time in or around water and adhere to the SunSmart guidelines to protect your skin and reduce the risk of sunburn.
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