Free beach camping in California is quite rare, as most beach campgrounds are managed by state parks or other organizations that charge fees. However, you can find some dispersed camping areas along the coast in certain parts of the state, such as on Bureau of Land Management (BLM) land or in National Forests. Keep in mind that these free camping spots usually have limited facilities and are often located in more remote areas. It's essential to follow the Leave No Trace principles and respect the environment when camping in these locations. Always check the specific regulations and restrictions for the area you plan to visit.