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One universal truth, whether you’re a child or an adult, is that dinosaurs are undeniably fascinating. While encountering one in person would likely be terrifying, the mere thought that these colossal and often dangerous creatures once roamed our planet is astonishing. Although movies like Jurassic Park have gone a long way in showcasing various dinosaur species (and giving us some unforgettable lines), there are several facts you may not know—particularly concerning aquatic dinosaurs.
The truth is, there are no such creatures as water dinosaurs. (Surprising, right?) According to the book Dinosaurs: The Very Latest Information and Hands-On Activities From the Museum of the Rockies by Emily Johnson and Mark Stevens, all dinosaurs were terrestrial animals. While some could swim for brief periods, none made the oceans, lakes, or rivers their permanent homes.
This concept challenges our assumptions that dinosaurs dominated every environment: land, air, and sea. Just as you wouldn’t expect to find a lion swimming in the depths of the ocean, there’s no evidence to suggest that dinosaurs dwelled there either—at least with the discoveries we have today.
This leads us to even more questions. So, let’s explore these murky waters further. Brace yourself!
What Aquatic Creatures Did Exist?
If dinosaurs didn’t swim in the water, what types of marine creatures were present during the Mesozoic Era? Paleontologists label these animals as swimming reptiles. Even though they weren’t technically dinosaurs, they were just as formidable. You wouldn’t want to share a body of water with these predators! Here are some notable examples:
- Ichthyosaur: These fish-like reptiles, aptly named “fish lizard,” could grow to lengths of 10 to 40 feet.
- Plesiosaur: These large carnivorous reptiles were known for their long necks and could prey on smaller creatures like Ichthyosaurs.
- Basilosaurus: A whale-like creature with sharp teeth that could reach lengths of 50 to 80 feet.
- Helicoprion: This 15-foot-long shark-like creature had terrifying saw-like teeth (look it up for some nightmare fuel).
- Pliosaur: A carnivorous reptile characterized by a large head and short neck.
- Nothosaur: Similar to crocodiles, these reptiles featured long, flat tails and sharp teeth.
- Mosasaur: Known as the T-Rex of the seas, these aquatic lizards had snake-like bodies and long snouts.
What Aquatic Creatures Were Featured in Jurassic World?
Fans of the franchise may remember a massive sea creature making a splash in Jurassic World. While many might have assumed it to be a true dinosaur, it was actually a cloned version of the Mosasaurus. Despite not being a dinosaur, this creature was just as lethal as any land-based predator, easily devouring a Great White Shark and dragging a hybrid T-Rex to its watery demise. So, that colossal beast was essentially a huge water lizard—mind blown!
For further reading, check out this blog post.
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Summary
Dinosaurs, as we typically imagine them, never inhabited aquatic realms. Instead, various swimming reptiles ruled the Mesozoic waters. While movies like Jurassic World may blur the lines, it’s crucial to understand the distinction between dinosaurs and marine reptiles.
Keyphrase: aquatic dinosaurs
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