Police are reminding residents of the dangers surrounding cold water during periods of warmer weather.

A North Wales Police (NWP) spokesman said: "As we enjoy the wave of warm weather currently, we are warning children and young people to stay away from water-filled quarries and to be mindful of cold temperatures in lakes and rivers.

"Sadly over recent years there have been tragedies in the region when people have got into difficulty after entering the water to cool off in the hot weather."

A video made by the RNLI has been shared through NWP's social media channels, under the title 'float to live.'

Narrating the video is high-profile actor Liam Neeson, who says: "Everyone who falls into cold water unexpectedly has the same instinct, to swim hard to fight the cold water. But when people fight it, the chances are, they lose.

"Cold water shock makes them gasp uncontrollably and breathe in water, then they drown. But if they just float, until the cold water shock has passed, they'll be able to control their breathing and have a far better chance of staying alive."

The one minute video, urging people to 'Fight Your Instinct - Float to Live' video has been viewed almost 30,000 times on the RNLI's youtube feed.

Supt Dave Jolly said: "Although it can be very tempting to jump into a pool or lake to cool down on a hot day, or to swim in the water at disused quarries, the water depths are huge – up to 60 metres – and it can be very difficult to get out due to the steep faces.

"There are often hidden hazards such as debris, weeds and reeds that you may not be able to see from the surface.

"Swimmers can easily find themselves out of their depth. If you are thinking about going swimming in such places please think again, consider the dangers and don't trespass.

"We are also urging parents to educate their children about the dangers of trespassing and to avoid swimming in any pools or lakes and to also be aware of where their children are and what they are doing this summer."