I. Introduction
Water or oceans nearly covers the 70 percent of the earth's total area but, more than 80 percent of these areas are unmapped and unexplored[I] Due to the high difficulty in underwater monitoring and exploration, various underwater unmanned vehicles equipped with sophisticated sensors are being deployed to perform this task. However, individual vehicles cannot be specialized in doing a variety of task simultaneously. Further, if we want to add different functionalities on a single system it would increase its physical size of the individual vehicle hence the sophistication and its cost. A better option is rather having a group of vehicles or sensor connected through an ad-hoc network. Each node performing a different specific task, able to coordinate and communicate frequently with others. This model can be considered as an underwater based mobile ad-hoc network (UWAN), where the different nodes could communicate and coordinate without using underlying or fixed architecture.