Do most Scuba divers pee in their Wetsuits while diving?

During my open water course, our instructors all told us that they sometimes pee in their wetsuits while diving.

The saying goes, “There are those that pee in their wetsuits, and those that lie about it.”

1. If you are healthy, your urine is sterile when it exits your body. While the urine smells, it technically isn’t bad for you to come in contact with it.

2. Regarding sharks, yes, they can detect the blood/urine/bodily fluid in the water. Just because they can detect it, doesn’t mean that it will trigger anything in them. Humans are not on a shark’s menu. Now if you are dumping tuna fluids or seal fluids, I’d be worried. The anology that I like is if you smell a skunk on the side of the road, does that trigger you to be hungry for a hamburger?

3. In cooler water, many believe that peeing in the wetsuit helps them stay warm. It is a fine balance if it helps or not. First, you are expelling mass from your body which no longer has to be warmed. This is a good thing. However, most people when they pee in their wetsuit will “flush” it underwater. With the new water coming into the suit, your body has to work hard warming that water.

4. Never pee in a rental suit. Would you want to use a wetsuit that someone else peed in? It is a courtesy thing.

5. It is important to stay well hydrated before and after your dives. Dehydration is a major contributing factor to decompression sickness. Ok, so here you are being well hydrated. I think it is related to the submersion reflex, but the moment you hit the water, you have to pee. Holding it can cause more problems then just going in the wetsuit.

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