Tourists in Thailand are leaving so much rubbish on the beaches that authorities have introduced a smoking ban, along with a hefty fine and one year's prison sentence if you're caught doing it.

But help is also at hand in the shape of a locally-designed beach robot which combs the beach, sifting the sand and collecting all the rubbish.

The BBC's Carmen Roberts put the 'beachbot' to the test on Samila Beach, in Thailand's southern province of Songkhla.