Land Before Time Wiki
Land Before Time Wiki
Swimming Sharptooth
Plesiosaur angry.png

Unknown (possibly a female)




Slate Gray (original)
Brown (remastered)

Eye color






Voice actor

Frank Welker (stock sound effects only)

First appearance

The Land Before Time IV: Journey through the Mists

Last appearance

The Land Before Time IV: Journey through the Mists

A "Swimming Sharptooth" makes a small appearance in The Land Before Time IV: Journey through the Mists. It lives in the Mysterious Beyond, and possibly lives in a river area, as it appears there in the film. Though what specific genus of plesiosaur it is intended to represent is unknown, a number of fans believe that it is a Hydrotherosaurus or a Pleisiosaurus.


It appears near the end of the film, after Ichy and Dil part ways. After Dil swats away Ichy with her tail, she bumps into the plesiosaur, who subsequently chases the Deinosuchus away. It is unknown if Dil survived the encounter, or if she was ultimately eaten by the much larger plesiosaur. It is likely that she did not escape the much faster and keen sighted plesiosaur.


  • The swimming sharptooth's color is brown instead of gray in the 2014 remastered DVD re-release of the film.
  • The plesiosaur is the fourth Swimming Sharptooth to appear in The Land Before Time franchise.
  • This plesiosaur is the first and so far only one of its species in the franchise.
  • It is the first plesiosaur to appear in the franchise.
  • It bears a slight resemblance to the famous Loch Ness Monster that is believed to live in Loch Ness, Scotland.
  • The plesiosaur looks similar to a real Elasmosaurus, but Elsie, who is confirmed to be an Elasmosaurus from The Land Before Time V: The Mysterious Island, looks different, due to her having a crest on her head.



Sharpteeth in The Land Before Time, in order of appearance:
Sharptooth (character) | Chomper | Papa Sharptooth | Mama Sharptooth | Fast Biters (The Time of the Great Giving) | Ichy and Dil | Swimming Sharptooth (Journey Through the Mists) | Swimming Sharptooth (The Mysterious Island) | Sharptooth Flyer Family (The Mysterious Island) | Plated Sharptooth (The Mysterious Island) | Meanest Sharptooth | Fantasy Sharpteeth (Lone Dinosaur Song) | Browridge Sharptooth (The Secret of Saurus Rock) | Bigbiter Sharptooth (The Secret of Saurus Rock) | Fast Biters (The Stone of Cold Fire) | Bigbiter Sharptooth (The Big Freeze) | Sharptooth Swimmer (Journey to Big Water) | Belly Dragger (The Great Longneck Migration) | Sharptooth Pack (The Great Longneck Migration) | Fast Biters (Invasion of the Tinysauruses) | Sailback Sharptooth (The Great Day of the Flyers) | Hookthumb Sharpteeth (The Wisdom of Friends) | Red Claw | Screech and Thud | Fantasy Sharpteeth (Rhett's Story) | Fast Biters (The Lonely Journey) | Sharptooth Family (The Lonely Journey) | Belly Draggers (The Amazing Threehorn Girl) | Sailback Sharpteeth (The Hermit of Black Rock) | Sharptooth Mom | Fast Biter Babies | Featherhead Sharpteeth (Journey of the Brave) | Horned Sharptooth (Journey of the Brave) | Minor Sharpteeth |
See Also
Main families