Commonly called a space whale, gormaganders are a space-borne extremophile that spend their lives feeding on alpha particles in solar winds. When they become separated from their pods, the gormaganders often become so focused on that single task, they ignore all other instincts -- including mating resulting in the species being listed on the Endangered Species Act.
The U.S.S. Discovery found a gormagander in distress during the Klingon-Federation War which required them to transport the animal to a xenologic facility. Unbeknownst to the crew, Harry Mudd hid his ship inside the gormagander in order to infiltrate the ship.