They would cause the destruction of homes and buildings nearby, which would cause millions of untold damage and huge amount of money spend on rebuilding the structures that had fallen. Trees were be uprooted, causing muds to get wash down into the sea, blocking out the oxygen supply in the sea. Without water, the marine plants and animals would get deprived of oxygen, and also die. Plants would have lack of sunlight, and also cannot photosynthesize, and also would die.
