How to do beachy waves in less than 5 minutes: 1. Divide your hair into two parts. 2. Twist each section and tie with a hair tie. 3. Run your straighter/flat iron over both of the twist a few times. 4. Untie twists, and you're done. I need to try this.
Sea salt spray is amazing to create beachy curls: add two teaspoons of salt to mineral water and a small amount of conditioner, put into a spray bottle, shake and spray onto damp hair. For best results dry with hairdryer and sccrunch hair while you dry.