Other
- Sea Dragon (rocket)
- Sea Dragon (roller coaster)
- Sea Dragon class ROUV, a remotely operated underwater vehicle developed by China
- Sea Dragon (computer game)
- A zooming technology by Seadragon Software (acquired by Microsoft in 2006)
- Sea monster, a mythical creature
- A fictional creature in the Majipoor novel series
- A version of the pirate ship amusement park ride
- The Dragon in the Sea a novel by Frank Herbert
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