Crusta-Supra 1, also known as First Crustacean Supreme were genetically engineered to provide food after all aquatic life had become extinct. They could multiply at the rate of 50 per hour. Ten Crusta-Supra 1s would be enough to feed the colony on Mars for three years[1].
By the year 1998, 20,000,000 ambled across the sea-beds[1].
It was reported that at least one Crusta-Supra had been seen on a beach near Miami breathing air in January 1991[1].