Miwa is Co-Founder and Co-Director Emeritus (2011-2021) of local non-profit Kua‘āina Ulu ‘Auamo (KUA) and continues to serve as an advisor, and member of KUA’s Limu Hui, a network of native seaweed practitioners which she helped to establish. During her time at KUA, Miwa worked to raise community support, fundraising, and public awareness for the organization’s community-based natural resource management (CBNRM) initiatives. Miwa has worked in environmental policy and environmental justice advocacy in communities and ecologies from artisanal fisheries in Baja California to national park lands in Tanzania. Prior to her work at KUA, Miwa served as the Policy and Communications Director for Santa Monica Bay Commission (National Estuary Program) as well as Executive Director of KAHEA, a Hawaiian environmental grassroots non-profit for Native Hawaiian land rights. Today, Miwa is in residency at Hawaiʻi Investment Ready, a local impact finance intermediary. She is also a frequent collaborator with Groundswell, a community-based research, planning and evaluation firm.