Answer:
Michael's statement is partially correct. While his home is 12 feet below sea level and his mother's home is 12 feet above sea level, this does not necessarily mean they are in opposite directions. Sea level is a global measure, so it is possible for two homes to be at different elevations but still in the same direction. For example, if Michael and his mother's homes were both located on a mountain, one could be 12 feet below sea level while the other could be 12 feet above sea level, but they could still be in the same direction. So yes he is correct.