Get your fix of vitamin D at Mouthwell Sand. After you've topped up your tan, stick around and watch the sky change color as the sun sets.
You'll be spoiled for sightseeing choice in Kingsbridge. Mouthwell Sand is an ideal place to begin here, but there are plenty of other interesting places to discover. Burgh Island, Hope Cove Beach, and Bigbury-on-Sea Beach are near the stretch of coastline and will round out your day nicely.