The humble camel or ship of the desert is made up of three species. The one humped camel makes up well over 90% of the population with the other two two humped camels making up the rest.
The humps of the camel do not store water but are actually fat. This helps keep the camel cool. Fat acts as an insulator if it is stored throughout the body.
They have a number of amazing adaptations to cope with dessert conditions. They can go without water for ten days. They have oval blood cells which helps push the blood about when they are dehydrated. They can also absorb huge amounts of water from the food they eat. Hats off to the humble camel, domesticated over 5,000 years ago they are still going strong.
See wikipedia for more information.