And its dangers
One thing to consider before even going to the beach is the harmful effects of the sun's rays. A day at the beach is also a day of prolonged exposure under the harsh gaze of the sun. Be sure to pack sun block to protect yourself from this serious danger.
Also attributed to the sun is heat exhaustion. On a particularly hot day, as you run and frolic on the beach, your body is rapidly dehydrating. Make sure to bring a few bottles of water or some other beverage to keep your body hydrated, and break up your exposure to the sun by seeking to sit in the shade or under an umbrella periodically, if either is available. Try to avoid drinking alcohol or even soda, as both can serve to dehydrate you further.
Beaches in certain areas may have their own specific threats, such as an abundance of sharp rocks or areas of ticks or poison ivy should you venture away from the sand.
Try to be aware of any dangers specific to your particular beach of choice in addition to the ones listen above. A little knowledge and preparation is all you need to make every beach day a thrilling one.