Chessie is a legendary sea monster said to live in the midst of the Chesapeake Bay. Over the years there have been many alleged sightings of a serpent-like creature with flippers as part of its body. Most sighting reports describe it as a long, snake-like creature, from 25 feet (7.6 m) to 40 feet (12 m) long. It is said to swim using its body as a sine curve moving through the water. There were a rash of sightings in 1977 and more in the 1980s, with occasional reports since then.