This article highlights the creation of Tang.ɢwan-ḥačxʷiqak-Tsig̱is, Canada’s largest marine protected area (MPA), through a partnership between the Haida Nation, Pacheedaht First Nation, Nuu-Chah-Nulth Tribal Council, Quatsino First Nation and the Government of Canada. Located west of Vancouver Island, this area covers over 133,000 square kilometres and is home to rare ecosystems, including hydrothermal vents and sea mounts, which support unique marine species. The article features quotes and insights from the partners involved and provides a testament to Indigenous leadership and collaboration, rooted in traditional knowledge and a shared commitment to protecting these waters for future generations.