Seagrass meadows cover about 0.1–0.2% of the global ocean and are highly productive ecosystems that play a key role in coastal environments. They face threats from both direct and indirect human impacts, including mechanical damage, eutrophication, siltation, coastal construction, and climate change effects such as rising sea levels, increased storms, and UV radiation. Natural causes like cyclones and floods also contribute to seagrass loss. The review highlights that current losses are expected to accelerate, particularly in Southeast Asia and the Caribbean, due to increasing human pressure on coastal zones. While positive efforts include legislation to protect seagrass and improved monitoring, these are unlikely to offset the negative impacts, especially in developing tropical regions where conservation policies are limited. The lack of coherent monitoring programs and reliable predictions for future loss rates hinders global conservation efforts. Three key actions are needed: (1) a global monitoring network, (2) quantitative models predicting seagrass responses to disturbances, and (3) public education on seagrass functions and human impacts. Seagrasses are important for carbon storage, oxygen production, sediment stabilization, and supporting marine biodiversity. They are affected by changes in water quality, sediment conditions, and climate factors like temperature and UV radiation. Human activities such as coastal construction, aquaculture, and shipping contribute to seagrass loss, while climate change may lead to sea-level rise, increased storms, and ocean acidification. The review suggests that seagrass ecosystems may experience a global decline, with significant losses in tropical regions. In developed countries, conservation efforts may lead to some improvement, but in developing regions, seagrass meadows are likely to face continued degradation due to land-use changes, nutrient pollution, and climate impacts. By 2025, seagrass loss is expected to be significant, particularly in Southeast Asia, East Africa, and the Caribbean. Oceania may see relatively small losses due to strict conservation policies, but coastal areas near Australian cities have already experienced significant loss. Global processes like sea-level rise and increased storm frequency are expected to further impact seagrass meadows. The review emphasizes the need for improved monitoring, research, and conservation strategies to address the challenges facing seagrass ecosystems.Seagrass meadows cover about 0.1–0.2% of the global ocean and are highly productive ecosystems that play a key role in coastal environments. They face threats from both direct and indirect human impacts, including mechanical damage, eutrophication, siltation, coastal construction, and climate change effects such as rising sea levels, increased storms, and UV radiation. Natural causes like cyclones and floods also contribute to seagrass loss. The review highlights that current losses are expected to accelerate, particularly in Southeast Asia and the Caribbean, due to increasing human pressure on coastal zones. While positive efforts include legislation to protect seagrass and improved monitoring, these are unlikely to offset the negative impacts, especially in developing tropical regions where conservation policies are limited. The lack of coherent monitoring programs and reliable predictions for future loss rates hinders global conservation efforts. Three key actions are needed: (1) a global monitoring network, (2) quantitative models predicting seagrass responses to disturbances, and (3) public education on seagrass functions and human impacts. Seagrasses are important for carbon storage, oxygen production, sediment stabilization, and supporting marine biodiversity. They are affected by changes in water quality, sediment conditions, and climate factors like temperature and UV radiation. Human activities such as coastal construction, aquaculture, and shipping contribute to seagrass loss, while climate change may lead to sea-level rise, increased storms, and ocean acidification. The review suggests that seagrass ecosystems may experience a global decline, with significant losses in tropical regions. In developed countries, conservation efforts may lead to some improvement, but in developing regions, seagrass meadows are likely to face continued degradation due to land-use changes, nutrient pollution, and climate impacts. By 2025, seagrass loss is expected to be significant, particularly in Southeast Asia, East Africa, and the Caribbean. Oceania may see relatively small losses due to strict conservation policies, but coastal areas near Australian cities have already experienced significant loss. Global processes like sea-level rise and increased storm frequency are expected to further impact seagrass meadows. The review emphasizes the need for improved monitoring, research, and conservation strategies to address the challenges facing seagrass ecosystems.