The deserts of Northern Africa were quite different 100 million years ago. Vast coastal mangrove forests dotting huge swaths of tidal flats and channels covered what would become Egypt and Morocco.
The inland seas and rivers were a hotbed of life. Huge fish, ancient crocodiles and even some plesiosaurs swam those waters. Titanic sauropods like Paratitan and Aegyptosaurus walked the coastline.
One dinosaur was uniquely adapted to surviving this environment of constant change. It stalked the mangroves and swam the channels, hunting its prey. This was the domain of Spinosaurus.