How do spinosaurus survive?

Spinosaurus, with their long jaws, interlocking teeth, and possible pressure sensors in their jaws, were well adapted to hunt fish, their primary prey, although they probably also scavenged and hunted smaller terrestrial prey. After hatching, it is unknown whether they were raised by their parents or had to fend for themselves immediately. In either case, larger predators would have been a threat until they grew to be adults. As adults, Spinosaurus were huge, and only had a few enemies, such as Carcharodontosaurus, Bahariasaurus, and Stomatosuchus.