A worker from the Department of Environment and Natural Resources (DENR) clears the fallen branches and collects the garbage washed from the Manila Bay at the Mangrove Forest of the Las Pinas-Paranaque Wetland Park in Las Pinas City, the Philippines, April 20, 2021. The DENR takes care of the wetland park, a critical habitat for various kinds of mangrove trees and many migratory bird species. (Photos: Xinhua/Rouelle Umali)

Workers from the Department of Environment and Natural Resources (DENR) clear the fallen branches and pick up the garbage washed from the Manila Bay at the Mangrove Forest of the Las Pinas-Paranaque Wetland Park in Las Pinas City, the Philippines, April 20, 2021. The DENR takes care of the wetland park, a critical habitat for various kinds of mangrove trees and many migratory bird species.

A worker from the Department of Environment and Natural Resources (DENR) collects the garbage washed from the Manila Bay at the Mangrove Forest of the Las Pinas-Paranaque Wetland Park in Las Pinas City, the Philippines, April 20, 2021. The DENR takes care of the wetland park, a critical habitat for various kinds of mangrove trees and many migratory bird species.

Workers from the Department of Environment and Natural Resources (DENR) clear the fallen branches and pick up the garbage washed from the Manila Bay at the Mangrove Forest of the Las Pinas-Paranaque Wetland Park in Las Pinas City, the Philippines, April 20, 2021. The DENR takes care of the wetland park, a critical habitat for various kinds of mangrove trees and many migratory bird species.

Workers from the Department of Environment and Natural Resources (DENR) clear the fallen branches and pick up the garbage washed from the Manila Bay at the Mangrove Forest of the Las Pinas-Paranaque Wetland Park in Las Pinas City, the Philippines, April 20, 2021. The DENR takes care of the wetland park, a critical habitat for various kinds of mangrove trees and many migratory bird species.

Workers from the Department of Environment and Natural Resources (DENR) clear the fallen branches and pick up the garbage washed from the Manila Bay at the Mangrove Forest of the Las Pinas-Paranaque Wetland Park in Las Pinas City, the Philippines, April 20, 2021. The DENR takes care of the wetland park, a critical habitat for various kinds of mangrove trees and many migratory bird species.

A worker from the Department of Environment and Natural Resources (DENR) clears the fallen branches at the Mangrove Forest of the Las Pinas-Paranaque Wetland Park in Las Pinas City, the Philippines, April 20, 2021. The DENR takes care of the wetland park, a critical habitat for various kinds of mangrove trees and many migratory bird species.