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Understanding the state and value of the world’s wetlands The Global Wetland Outlook 2025 presents a synthesis of scientific information on the value of the world’s wetlands, the costs to society due to wetland loss and degradation and the scale of investment needed to restore wetlands. It is based on the latest publications and data on the extent of inland, coastal and marine wetlands and global databases on the benefits that wetlands provide.

The     Blue     Carbon     Finance     Toolbox     provides     a     comprehensive  overview  of  financial  mechanisms  and  strategies  to  support  the  conservation,  restoration,  and  sustainable  management  of  blue  carbon  ecosystems.

There is a widespread perception that illegal fishing is common in marine protected areas (MPAs) due to strong incentives for poaching and the high cost of monitoring and enforcement. Using artificial intelligence and satellite-based Earth observations, we provide estimates of industrial fishing activity in fully and highly protected MPAs worldwide, in which such fishing is banned. We find little to no activity in most cases.

Despite the increasing number of species assessed for extinction risk by the International Union for Conservation of Nature (IUCN) (163,040 species as of 2024), only about 1 in 1,000 have been downlisted due to genuine population improvement. Although this rare conservation achievement has been widely celebrated in several recent cases, some other downlisting decisions have met with controversy. A primary role of the IUCN is to assess extinction risk.

Papua New Guinea (PNG) is home to one of the largest mangrove habitats (6% of the world’s mangrove area), which plays a crucial role in coastal protection, carbon sequestration and supporting biodiversity and livelihoods. With such an extensive mangrove cover, monitoring at scale is invaluable for sustainable mangrove management (conservation, protection and restoration).

Mangroves provide numerous ecosystem services and are increasingly recognized as a natural climate solution. As a result, multiple recent initiatives have set ambitious mangrove restoration targets. However, there has been little research estimating the costs of achieving such targets, either site by site or in aggregate. Here, we spatially model the costs of restoring mangroves globally based on reported implementation costs from 249 restoration projects in 25 countries.

This guidance aims to inform the planning, design, and implementation of new and expanded MPAs, OECMs, areas conserved by Indigenous peoples, and networks of protected and conserved areas at the community, national, and international levels. It focuses on why it is important to consider climate change in MPA1 planning, and how new areas can be established in ways that build climate resilience, adaptation, and mitigation.

International wildlife trade contributes to the loss of biodiversity and has driven several terrestrial and aquatic species to extinction. Sharks and rays are some of the most threatened vertebrates, with overfishing considered the primary threat causing substantial global population declines. To prevent further depletions driven by the demand for and trade in shark and ray products. Parties to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) listed 44 species on Appendices I and II between 2003–2019.

Forest and land cover across the Pacific are undergoing rapid transformation. In many areas, the removal of native vegetation and deforestation, whether through agriculture, urban development, or natural disasters such as cyclones, have made ecosystems increasingly vulnerable to invasion by non-native plant species. Among these, aggressive colonisers like Cordia alliodora and Spathodea campanulata (African Tulip) are threatening biodiversity, ecosystem health, food security and local economies.

Marine spatial planning (MSP), initially developed to address the needs of the global North, is gaining significant traction in Small Island Developing States (SIDS) and is hailed as a collaborative governance instrument for managing and optimizing the allocation of ocean space. Despite its growing adoption, there has been limited attention given to what is needed for MSP to be effective and collaborative in SIDS, which is struggling with issues of fragmented ocean governance, insufficient funding, data limitations, and ad hoc stakeholder engagement.