1. Choose a high protection sunscreen. Get yourself a high protection sunscreen, with an SPF of at least 30. Nowadays, most sunscreens on the market are non-oily, not sticky and water resistant, so you can splash back into water without any worries. Even for the slackers, a few come in a spray. Some can be expensive, but if you see it as a unique expense for the whole duration of your Summer, it's not much.
2. Take care of you and the young. The young ones have very sensitive skin and need to be protected from the sun. Younger generations believe they are ready to hit the beach with just a swimsuit and a towel, forgetting one of the most important things when meeting the scorching summer sun. Make sure they are protected with a good sunscreen.
3. Watch out for skin marks. When you are splattered in the sun without protection, not only you risk getting burnt like a shrimp in olive oil, but you also risk the appearance of moles, which are nothing more than benign tumors in the skin, which may actually worsen. A melanoma, if not treated, has plenty of time to create vascular bed and attack its lymph nodes and nearby organs. These actions can then lead to cancer. Scared enough?