Safety charities say it's really important that young people stay safe around water - especially when it's hot. The sunny weather can make it tempting to go for a swim but they say that everyone should only swim where, and when, it's safe to do so. The Royal Life Saving Society (RLSS) are a charity who campaign to raise awareness of how to have fun around water, while avoiding danger. They want people to be able to enjoy themselves by following their safety tips. These include only swimming where there are lifeguards, not swimming too far from the shore and knowing that water can be much, much colder than it looks, even on hot days, which can affect your ability to swim. Also, children should always go swimming with an adult and never by themselves, says the Royal Society for the Prevention of Accidents (ROSPA).