Great White Sharks feed during the daytime, and have a special mechanism that allows them to sense movement of a fish. It has special sensors that pick up on the movement of its prey, also they have a keen sense of smell and eye sight. All these things determine if a shark is going to attack its prey, which it does by charging it from underneath delivering a fatal bite and either swim away letting it weaken or chomping it up right there. The sharks diet mainly consists of seals, sea lions, fish, other smaller sharks, and elephant seals. Also they will eat dolphins is they can defeat it.
Work Cited: WSWP. Great White Shark: Food&Feeding. Retrieved From: http://www.great-white-shark.com/shark-food.html