Nina is of of mixed origin and probably a bit over one year old. Malnourished, just 14kg, in bad shape, not chipped and very shy.
Rescue swimmers must be able to operate in high-sakes situations so they spend about six weeks in boot camp-like training.
A rescue swimmer must meet certain standard to receive the title.
Trainee coxswain Richard Barton-Wood said: "As we were finishing our training session a lone duckling was spotted in the bay by one of the crew.
"We scoured the area but couldn't find any other ducks, so it had obviously been abandoned "Some people did try to get close to it but it just swam further out.
Fewer than 50 percent pass and join the ranks of about 300 rescue swimmers service-wide.
A rescue swimmer must have the flexibility, strength and endurance to function in open seas for 30 minutes, according to the Coast Guard Helicopter Rescue Swimmer Manual.
Giggles is one of the main characters of Happy Tree Friends, and one of the four primary characters of the show, along with Cuddles, Toothy, and Lumpy.
She is also a playable character in the False Alarm video game and in Deadeye Derby.
"She has a menagerie of animals and birds so she has taken it in and we can report that it is doing very well.
"There is also a pond there, so it if wants to fly away when it is older then it is free to do so." The duckling has been happily swimming in Christina's bath and will be released when he gets bigger.
They also learn water-deployment procedures, survivor approach and release techniques, equipment release methods from Navy and Air Force flyers, and how to untangle themselves from parachutes and backpacks.