This skill alone can be a life saver. Learning how to navigate your way back to shore or your boat is an incredibly important skill to have. PADI of course offers a navigation course and integrates these skills into many of their programs.
Below is a quick video to help you familiarize yourself with the idea of navigating underwater.
Of course it’s best to sign up for a course and practice with a skilled diver instructor to make sure you know really do understand how to navigate.