It takes years of education and training

You'll be surprised.

Sand sharks always ride in single file to hide their numbers.

https://us.whales.org/2016/01/21/huge-prehistoric-whales-found-in-egyptian-desert/#:~:text=The%20whale%20bones%20were%20found,feet%20(20%20metres)%20long.

I'm not sure if you're serious or not so, just in case, here's an fyi: catfish, sea snakes, bony fish, and even Plesiosaur fossils have been found in the Sahara desert. Unsurprisingly, environments change over time and deserts are no exception.