With advancement in technology humans are achieving new heights every day. With these advancements humans have understood is that, best way to move ahead is the way mother nature does. If we look around, this world is an amazingly engineered system. Since 1980s researchers are working on Swarm Intelligence, though work on Artificial Intelligence started in 1950s. SI is a field that is completely inspired by nature. When you read about SI any where there will be lot of examples of Ant colonies, Honey Bee colonies, Bird flocking etc. Researches have studied these biological swarms deeply and have used the information for designing smarter networks, smarter servers and many more applications. In Wireless Sensor Networks, resources are limited hence optimal use of resources is required. SI provides amazing opportunity to achieve this goal.