Water orms are extremely long-lived. Several different variants have been reported. With sightings rare and unverifiable, it is unclear whether these are variations within a single species, or several unrelated creatures. Some are described as long-necked aquatic reptiles, some as fresh-water sea serpents, others as bizarrely elongated seals or whales, and still others as impossibly large sea horses. Most are 40 to 45 feet in length, and weigh 2,000 to 3,000 pounds.