Sea-serpents

Sea-serpents, also called fish-dragons, were a breed of Dragons only mentioned fleetingly in Elvish linguistic writings. No story tells of their appearance in the history of Arda.
Etymology
In other writings
In Roverandom, an ancient Sea-serpent known only as the Worm or the Serpent lived in a cave known as Pot at the bottom of the Deep Blue Sea. He was an extremely enormous and powerful creature, more than one hundred miles long, allegedly causing storms just by passing through the world. The Man-in-the-Moon had once tried to seal the Sea-serpent with his magic, but took fifty years to create the proper magic, and succeeded, though accidentally causing an entire continent to sink. During the time of the story, the Wizard Artaxerxes received written Complaints about the Sea-serpent allegedly waking up and moving to a new den that was in a cave that was very close to the mer-king's palace. Unfortunately, when Mr. Artaxerxes went to deal with him, Roverandom followed him and bit the tail of a shark in the shell carriage, causing a domino effect which ended with the last shark in the carriage biting the Sea-serpent. The awakening was further accelerated when Mr. Artaxerxes tried to put it back to sleep, causing him to dream that he was being burnt alive by a volcano. Earthquakes and hurricanes followed as the Sea-serpent continuously rolled over until he spoke loudly that he would only go back to sleep if Mr. Artaxerxes was banished. The Mer-people accepted his terms and banished the Wizard. The Sea-serpent presumably went back to sleep.
Portrayal in adaptations

1982-97: Middle-earth Role Playing:
Water Drakes, or Water Serpents, are drakes who have adapted to a life in freshwater pools or in the ocean. The smaller varieties, who only live in fresh-water, are called Rain-drakes (or Lake-worms), while the larger (who prey in all types of water) are called True Water-drakes or Sea Serpents. An individual Water-drake, Séahmatha (meaning "Lake Serpent" in the tongue of the Northmen), inhabits the Long Lake.
1995-8: Middle-earth Collectible Card Game:
"Sea Serpent" and "Rain-drake" are creatures of the Drake-kind. A unique dragon of the water is Eärcaraxë, which may be played keyed to coastal regions and sites.
Referencias
1. Esta ficha se ha importado inicialmente de TolkienGateway.net el día 29/05/2026.