This guide is a science-based, actionable toolkit for banks, insurers and investors to align decision-making with a healthy ocean and a sustainable blue economy. It aims to help break the pollution cycle, including plastics and other solid waste, and manage the impacts of coastal infrastructure projects such as seawalls, while exploring the potential of nature-based solutions including mangroves and reefs. The guide features inspirational images by world-renowned wildlife photographer and conservationist, Cristina Mittermeier, bringing to life the beauty and fragility of the marine ecosystem.