Re: The Genesis of the OU's MMUs

http://www.spawar.navy.mil/sandiego/technology/mammals/fleet.html

After the breakup of the USA, many Americans who had settled in
deepsea colonies in the Pacific emigrated to the OU.
One of the oldest units in the OUDF is the Marine Mammal Unit, which
can trace its ancestry back to the USN MMUs at the beginning of the
21st century.