It’s a Pin of a Dolphin!
Aren’t dolphins just the cutest creatures ever? Did you know that dolphins, like many other animals, merit a great deal of respect? Submariners are well-versed in this particular subject matter. Officers are expected to put in a lot of effort in order to earn the highest possible honour from their superior officers when they are stationed on board a submarine.
The only method for a marine to earn the dolphin pin is to study the inner workings of the submarine and understand how to use it as a weapon. This is the only requirement for the pin. After that, you would be required to take a test and earn a perfect score of 10 out of 10.