The box jellyfish is a fascinating marine creature known for its cube-shaped body and long, trailing tentacles. Found mainly in the warm coastal waters of the Pacific and Indian Oceans, these jellyfish are often transparent, making them difficult to spot in the water. They are notorious for their powerful sting, which can be extremely painful and even life-threatening to humans. Box jellyfish are not just dangerous; they are also remarkable swimmers. Unlike many jellyfish that drift with the currents, box jellyfish can actively swim by contracting their bell-shaped body. This ability allows them to navigate through the water and hunt for prey, such as small fish and plankton, making them both beautiful and deadly.