The Isla Verde Passage, which stretches along the coast of the northern Philippines, boasts one of the world's most complex ocean eco-systems with one of the largest variety of marine species. Many fishermen benefit from the rich biodiversity. But erratic weather patterns, a rapidly eroding coastline and rising water temperatures are threatening to destroy the ocean's fragile eco-system and the only means of surivival for many. But now, new intiatives are teaching locals to be more aware of their environment by fishing less, for example. Local residents are also expanding the tourism industry and planting mangroves, which help prevent the coast from eroding further.