A cannonball, also referred to as a bomb, is a diving style where the diver hugs their knees and attempts to enter the water with their body shaped as much like a sphere as possible. The goal is to create a large splash.[1]
Known in German as the Arschbombe, the cannonball has been turned into the competitive sport of "Splashdiving".[2]
In New Zealand, the dive is referred to colloquially as a Manu in the indigenous Māori language.[3]