Juvenile bull sharks are often lighter in color than adults, with more distinct patterns and markings. These may include dark spots or bands along the body or fins. As bull sharks age, their coloration may become more uniform, with the spots and bands fading.
Bull sharks also possess countershading, which is a form of camouflage that helps the sharks blend in with their surroundings. The darker coloration on the dorsal side of their body helps to camouflage them when viewed from above, while the lighter coloration on their ventral side helps to camouflage them when viewed from below. This color pattern helps the sharks to ambush prey and avoid predators.