It is difficult to determine who would win in a hypothetical battle between a single orca and a great white shark. Both species are highly skilled predators and have unique advantages. Orcas, also known as killer whales, are highly intelligent and social creatures, often solitary hunters in pods and using coordinated tactics to take down their prey. They are larger and more powerful than great white sharks, with their size and strength potentially giving them an advantage in a confrontation. On the other hand, great white sharks are known for their speed, agility, and powerful bite force. They are formidable solitary hunters and have been observed successfully hunting and killing various marine animals. Ultimately, the outcome of such a battle would likely depend on various factors such as the size and condition of the individuals involved, the environment in which the encounter takes place, and the specific circumstances of the confrontation.