Arsenio Butil Jnr fell to his knees and began to pray when last week’s deadly 7.8-magnitude earthquake began shaking his home on the coast of the southern Philippines. When he opened his eyes, he saw a once-familiar shoreline changing in real time, with swathes of previously submerged coral suddenly pushing above the waterline. The June 8 quake, driven by a shifting of the nearby Cotabato Trench, toppled buildings, triggered landslides and killed at least 76 people on the southern island of...