  Underwater environment is substantially less explored territory as compared
to earth surface due to lack of robust underwater communication infrastructure.
For Internet of Underwater things connectivity, underwater wireless optical
communication can play a vital role, compared to conventional radio frequency
communication, due to longer range, high data rate, low latency, and
unregulated bandwidth. This study proposes underwater wireless optical
communication driven local area network UWOC LAN, comprised of multiple network
nodes with optical transceivers. Moreover, the temperature sensor data is
encapsulated with individual authentication identity to enhance the security of
the framework at the user end. The proposed system is evaluated in a specially
designed water tank of 4 meters. The proposed system evaluation analysis shows
that the system can transmit underwater temperature data reliably in real time.
The proposed secure UWOC LAN is tested within a communication range of 16
meters by incorporating multi hop connectivity to monitor the underwater
environment.
