Mangroves are trees and shrubs that live in saltwater estuaries and along sheltered coastlines. They’re considered one of the planet’s most important ecosystems — but they are disappearing worldwide. To combat the trend, an Indigenous conservation group is working to protect some of the northernmost mangroves on the North American continent. From the Fronteras Desk in Hermosillo, KJZZ’s Kendal Blust brings us the story.