🐋 Blue whale vs Brontosaurus 🦕
The blue whale is about one and a half times as long as Brontosaurus. The blue whale weighs about 6 times as much as Brontosaurus.
| Row | 🐋 Blue whale | 🦕 Brontosaurus |
|---|---|---|
| Top speed We don't have a checked number for Brontosaurus yet. | 20 mph32 km/h1 | no checked number yet |
| Weight The blue whale weighs about 6 times as much as Brontosaurus. | 165 tons150 tonnes1 | 30 tons27 tonnes2 |
| Lives Nobody knows how long a dinosaur lived, so there is nothing to compare. | 80 to 90 years80 to 90 years1 | no checked number yet |
| Eats The blue whale eats tiny floating sea life; Brontosaurus eats plants. | krill, tiny shrimp-like animals, by the mouthful | leaves from trees and low plants |
| Lives in One lived long ago, one lives today: they never met. | every ocean | western North America, including Wyoming, Utah and Colorado |
Which one? Blue whale or Brontosaurus
🏁 Who would win the race?
Nobody can time a dinosaur, so there is no race. Their bones tell us how big they were, not how fast.
We only race. Real animals mostly avoid each other. A race is the only fair contest: who reaches the tree first, by top speed.
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Getting the animals ready…
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The link carries only the two animals’ names: peabody.kids/animals/compare/blue-whale-vs-brontosaurus
Where these numbers come from
- NOAA Fisheries, checked 30 October 2026.
- National Park Service, Dinosaur National Monument: Apatosaurus, checked 30 October 2026.