There have been some observations of tiger sharks aggregating in certain areas, particularly around food sources like shipwrecks or breeding sites. However, these gatherings are usually temporary and don't involve coordinated hunting.
Individual tiger sharks are capable of hunting a wide variety of prey, including fish, sea turtles, birds, sea snakes, and even other sharks. They have a powerful bite and strong jaws, which allow them to crush bones and consume large prey.
So, while they might gather in groups, tiger sharks are primarily solitary and opportunistic predators who hunt on their own.