From X-Men #6: Professor X knows Namor McKenzie, the Sub-Mariner, is a mutant and tries to make contact. But Magneto is also trying to recruit the deep sea monarch, and to that end drips poison words into the ear of Namor's advisor, bringing Namor to Magneto's island. Namor considers whether Magneto will be a suitable ally, and as he does, the X-Men appear, determined to spoil the magnetic villain's plans! From X-Men #48: The secrets of the Beast's powers.
