Alex Sinunu was used to surfing three or four times a week in Santa Monica Bay – after all, the beach was just a mile from his home and he could ride his bike there with his board. But ever since the megafires that swept through neighboring Pacific Palisades in early January, the ocean has been filled with ash, debris – and endless questions. The massive blaze consumed thousands of homes and other structures, many of them on the edge of the Pacific coastline. Subsequent rainstorms sent tons of debris washing into the ocean, turned the water brown and raised