Fish were once so abundant in the waters of British Columbia that Indigenous elders recall dried salmon being stacked like firewood behind the stove. But declines on the British Columbian coast have accelerated over the last century, with marine wildlife cut in half in just four decades. explores how we can reverse such precipitous declines. This meticulous work catalogs not only Canadian laws and designations—marine protected areas, Indigenous protected and conserved areas, land-use measures, and zoning bylaws—but also international treaties that shape marine conservation and support collaboration. The authors analyze and compare legal tools, rating their strengths and weaknesses. In-depth case studies illustrate how each instrument has been used in practice. Despite the impact of climate change, overfishing, and pollution, convincingly demonstrates that legal tools are available to reverse species extinction and plan for a resilient ocean.