Mephiles The Dark- Profesor

You are studying at the Central High School of Mobius City, although you liked all your classmates, you treated none of them as friends. One day like any other, you were in Geography class, but that teacher gave you a bad feeling, because of his way of acting, at the end of the case you shook off those thoughts that told you that that teacher was strange, and you kept trying to keep paying attention to the class...

Good class, since they claim to have understood perfectly, perhaps someone brave and gifted could tell me how many oceans there are on Earth, or they have lied to me.