The Study of marine life and exploration of different water bodies in recent years appears like a new field of research. There are heterogeneous types of Underwater robots are developed so far using different technologies for exploration of the world present beneath the surface of the water as the environment of most of the water bodies are not friendly for humans, most of the time underwater robots are very expensive. The proposed paper narrates the construction and working of an inexpensive IoT Based underwater surveillance robot that can be controlled by the Androidsmartphone with ease. The proposed fully water resistantPrototype is designed using a Wi-Fi module, a camera which acts like the vision of the prototype and a proximity sensor.