Morton the Sea Monster, better known as the Nantucket Sea Monster, is one of the classic novelty balloons in the Macy's Thanksgiving Day Parade.
History with the Macy's Parade.
In August of 1937, the town of Nantucket, Massachusetts was caught in a stir when a local fisherman reported that he had seen a sea monster. This was initially dismissed as a lie, but when a second resident also claimed to have seen it, rumors began to spring up. When it's 66" by 45" footprints popped up on the beach, the town was convinced there really was something out there. About a week later, the townspeople were surprised to see the beast beached on the shore. It was a monster--a monster-shaped rubber balloon, that is.
The truth came out; local puppeteer Tony Sarg had brought in the 125-foot critter, one he has created for the previous year's Macy's Parade, to stir up business for his store, which was starting to lose sales. While the business didn't profit from the stunt, the town did; people all across the country began to flock to the colossal creature. Eventually, Morton returned to New York in time for the 1937 Macy's Parade, by which point his scales had shifted from green to red. He was last seen in 1938 and 1939 for Boston's Santason Parade alongside the first Mickey Mouse, Officer SOS 13, and the 2 Headed Pirate,