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We just fixed downloads: every STL now comes straight from fast, reliable storage, saved under its own name, we're making 10,000 STL files and dozens of new tools, so things might break. We'll fix them ASAP.

Gliding with a slow, peaceful stroke, a Steller's sea cow shows off its huge rounded body and smooth skin. The small head has a broad muzzle, tiny eyes and soft lips, and two stubby flippers reach forward beneath the belly. A gently curving back sweeps into a forked tail fluke raised high behind. An extinct marine giant for an ocean life display, a prehistoric mammal collection or a classroom talk about vanished sea creatures.

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