If you are asking about the possibility - not necessarily whether it is done:

YES - within the limitations regarding multi-path propagation and additional reflections due to water layers originating in different levels of salinity.

https://en.wikipedia.org/wiki/Underwater_acoustic_communication

might serve as an entry to further search regarding the specifics of underwater comms.

Regards

Yeah, surely multi-path propagation and additional reflections from UW layers would make it difficult to compute the angle. The problem will be much more in shallow water rather than deep water.

I want to know whether any such real-life implementation is done or whether there are any research article on finding the AoA?

Following my first answer I did a bit of roaming - starting with the link given.

https://en.wikipedia.org/wiki/Underwater_acoustics#Underwater_Navigation_and_Tracking

will provide you with further answers about the how and why. And wikipedia is also a good starting point when looking for scientific papers.

Regards