I WONDER - Were There Any Aquatic Dinosaurs? Me Pregunto - Existieron Dinosaurios Acuáticos?

The video discusses the Spinosaurus, a unique dinosaur known for its ability to swim. Paleontologists believe its physical characteristics, such as paws with membranes, sharp teeth, dense bones, and nostrils near the top of its snout, enabled it to swim in deep water. It is the only dinosaur known to have this capability. Additionally, its long and flexible tail helped it propel through water.

What makes Spinosaurus unique among dinosaurs according to paleontologists?

How did the long tail of Spinosaurus assist in its movement?