Workers unload thousands of colourful watermelons from boats at a bustling riverside market. The largest of the boats can fit up to 500 melons, which are then carried in baskets balanced on the heads of the workers and loaded into delivery vans.

The melons weigh between five and 20 kilograms, and each day up to 100,000 of the fruit are transported for sale at markets across Dhaka, the capital of Bangladesh.