Owning a swimming pool pretty much instantly bumps your pad up to the coolest house on the block. Sweet as it may be, it also means that you have a big, watery hole right in the middle of your backyard. This can be a recipe for some pretty unexpected things to happen, especially if you’re not paying attention.

When one family heard a mysterious splash come from out of nowhere, their worst nightmares instantly started racing through their minds. As they ran out of the house to face the mystery of the splash, they discovered a dramatic scene beyond what they ever could have imagined.

Everyone knows that pools are a great way to get some exercise, enjoy family-friendly activities, and cool down during particularly hot weather. Still, as with any home fixture, there are some risks involved.

Even if you’re a strong swimmer, you can easily become injured on the equipment if you’re not careful. It’s generally a good idea to avoid using the pool alone or unsupervised — especially when it comes to young children.