What dinosaur had nostrils near the top of his head that functioned like a natural snorkel?

The dinosaur known for having nostrils positioned near the top of its head, functioning like a natural snorkel, is the spinosaurus. This adaptation likely helped it to hunt and breathe while partially submerged in water, making it a proficient swimmer. The spinosaurus is believed to have primarily fed on fish and other aquatic prey, utilizing its unique anatomy to thrive in a semi-aquatic environment.