A deep-sea diver is in search of coral reefs. He finds a beautiful one at an elevation of -224 feet. While taking pictures of the reef, he catches sight of a manta ray. He swims up 76 feet to check it out. What is the diver's new elevation? Hint: Sketch a vertical line. Does the diver move up or down? If he moves up, it's a positive change. If he moves down, it's a negative change. *