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|Average length||~ 30 - 35 meters|
|Behind the Scenes|
|Universe||The Fog Horn|
|Created by||Ray Bradbury|
This is an unnamed species of huge, prehistoric Sea Monsters believed to be all but extinct now, with possibly only one individual remaining.
This reptilian creature is estimated as being about 30 to 35 meters in length, of which 15 are taken by its sinuous slender neck. McDunn believes it to be a relative of the dinosaur lineage and that the single individual observed by him was probably thousands of years old, surviving in the great ocean depths and feeding on entire schools of fish and other sea creatures. The monster is black in coloration, and produces a vocalization that is virtually identical to the sound of a fog horn.
A member of this species was observed by lighthouse keepers Johnny and McDunn. According to the latter, this individual is likely to represent the last of its species. While mourning in isolation for the loss of its kin, the monster mistook the sound of the fog horn for a call from one of its long-lost companions. When it came to the surface the creature also mistook the silhouette of the lighthouse for another member of its species, raising its long neck over the water to greet it. However, after failing to communicate with the lighthouse, the monster left in frustration, only to return on the same day the following year, and the next one after it. In the third year, the monster destroyed the lighthouse and retreated into the ocean, never to be seen again.
- "The Fog Horn", by Ray Bradbury (1951)
- This creature served as the primary inspiration for the Rhedosaurus.