The serving size listed on a food label is a standardized amount to help you compare the nutrition content of various foods. This serving size doesn't mean it's the amount you should necessarily consume; that will depend on your hunger, activity level, health needs, and personal preferences. It's a good starting point, though, especially because we're used to eating large amounts of food, and understanding a serving size can help us eat more appropriate amounts of food especially if we're trying to lose weight.
Torrey pines, which are native to southern California, have needles in bundles of 5 and egg-shaped cones that are 5 inches long. This is the only hard pine with a 5-needle bundle. Torrey pines can grow to 40 feet.
Answer: The best places to find driftwood are on Northern California beaches such as these. However, you should be able to find plenty in the Bay Area and on the Central Coast. Keep in mind that driftwood gets washed downstream from forested areas then tossed around on the coast. So you're more likely to find it where there are forests nearby, and near areas where streams and rivers meet the sea. That's why there's so much driftwood in Northern California and so little in Southern California. There are redwood forests in Marin County, around Santa Cruz, and around the Big Sur area, so they should provide a decent amount of nice driftwood. I don't know specifically which beaches would be best.