I never thought beach combing was fun or enjoyable enough to be a hobby or just a reasonable pass time.
Actually beach combing really is fun when you enjoy the salty sea breeze brush on your face, the smell of the sea, and sand between your toes. When beach combing, you may find a lot of different stuff like trash, keys, coins, necklaces, earrings and some unmentionable stuff left by stray dogs.
I think there are professional beach combers who goes to the beach regularly dragging along bounty hunter metal detectors. Metal detectors actually gets the job done efficiently and fast. Plus it lessens the chance of digging up trash and other rubbish.