More than 100 years ago, red mangroves were introduced to Hawaii; now crews are trying to...

Environmental crews and volunteers physically clear thickets of invasive red mangrove trees and tangled stilt roots from a coastal waterway in Kailua, Oahu Environmental teams in Hawaii have launched a major effort to remove invasive red mangroves from nearly two miles of waterways in Kailua. The project aims to reverse more than a century of environmental damage and protect endangered native waterbirds. The multi-year project, announced on 25 August 2026 by the Hawaii Department of Land and Natural Resources (DLNR), will target thick stands of red mangrove (Rhizophora mangle) that have spread through streams feeding the Kawainui and Hamakua wetlands on the windward coast of Oahu. The work is funded through joint grants from the National Fish and Wildlife Foundation and the National Oceanic and Atmospheric Administration (NOAA). It brings together the DLNR Division of Forestry and Wildlife (DOFAW), the University of Hawaii Pacific Cooperative Studies Unit and Kailua-based environmental non-profit Hui o Koolaupoko (HOK). Community involvement is a key part of the plan. Project leaders are asking volunteers, community groups, schools and private landowners to help field crews remove ...