Little life inside the water
This is a mosquito larva. You can spot them in old water bowl which is full of water before a month or two months ago. They are having one leg only and they can stand in the water. The various stages of a larva’s development are known as “instars.” After each instar (typically lasting a day or two) the larva molt, or shed their skin. For many mosquitoes, this process has three to four instars, and lasts only a few days. However, the complete mosquito life span can last from four days to several months, depending on temperature and other conditions.