This paper is aimed at giving an insight view over the research domains across various levels of Mobile Ad-hoc Networks. A mobile ad-hoc sensor network follows a broader sequence of operational scenarios, unlike typical sensor networks that communicate with the centralized controller. Hence they demand a less complicated setup favorably. Mobile ad-hoc sensors are otherwise known as hybrid ad-hoc networks that consist of some sensors spreads in a geographical area. All individual sensors are capable of mobile communication and have some level of intelligence to process signals and to transmit information. Mobile ad-hoc sensor networks are very constructive in different circumstances. These networks advance the operational efficiency of individual civilian applications. Mobile ad-hoc sensor network becomes highly adaptable so that it can be deployed in almost all environments. The evolution of research in MANET has been started from routing of packets, error free routing, reliable route to stable and secure path of communication in present days. Recent researchers may have much opening in the space of security over the data transmission in the MANET.