First, it\u2019s tricky to define what counts as reclamation and what doesn\u2019t. Does a polder (a piece of low-lying land reclaimed from the sea) belong in the same category as a luxury island? Do sea walls belong in the same category as \u201cdredge-and-fill peninsulas\u201d (land created by digging sand from a seabed or river banks that is used to fill an area of water).<\/p>\n
Second, at a global scale, constantly updating maps with rapidly changing unnatural boundary designs is a never-ending task, which involves extracting data from satellite images. <\/p>\n
The geometry of reclaimed sites and artificial shorelines<\/a> can seem bizarre \u2013 ranging from the leafed fronds of Ocean Flower Island in Hainan, China, to perfect crescents in Durrat Al Bahrain in the Persian Gulf, and straight-edged lattices in Lagos, Nigeria. In most cases, they are designed to look appealing without much consideration of ocean health or storm resilience<\/a>. <\/p>\n Durrat Al Bahrain island in the Persian Gulf. Sharp angles interrupt longshore drift. Features such as headlands, jetties or bends in the coastline block or redirect the flow of sand moved by waves. This causes sand to build up in some areas while leaving other beaches with less sand, leading to erosion.<\/p>\n With artificial coastlines, these effects are amplified \u2013 a particular problem in places without the financial means to manage their beaches.<\/p>\n Grid-like canals slice tidal flats into disjointed basins. On maps, the lines are neat \u2013 but in reality, they produce messy hydrodynamics and fragmented ecosystems.<\/p>\n Such misplaced \u201cneatness\u201d can have far-reaching consequences. Reclamation destroys mangroves, muddy tidal flats and seagrass meadows \u2013 ecosystems which act both as valuable stores of atmospheric carbon and fish nurseries.<\/p>\n Dredging also stirs up sediment which clouds the water downstream, making it harder for coral reefs to survive. This compounds climate stress, acting as a threat multiplier. Most of the artificial coastlines aren\u2019t as resilient to extreme weather as they could be.<\/p>\n Read more: Human-made coastal changes disturb natural water flow, often leading to poor water quality, floods and erosion. Coastal communities can lose their fishing grounds and safe landing beaches. Without protective natural ecosystems acting as a buffer against extreme weather, often the poorest coastal communities bear the greatest impacts from coastal erosion and sea-level rise. <\/p>\n There\u2019s also a carbon cost to this type of coastal development. Dredgers, quarrying, cement and machinery all stack up emissions. Add in the lost carbon storage from destroyed wetlands, and reclamation becomes a climate double blow<\/a>. <\/p>\n How maps become bridges to action<\/p>\n Maps reveal where, when and how much development is occurring. They can become bridges to action if this research into shoreline change is combined with biodiversity surveys (to assess marine life), hydrodynamic modelling (changes to currents) and social impact assessments (how coastal communities are affected).<\/p>\n In my view, environmental impact assessments should look beyond short-term, single-project effects, and consider how multiple projects collectively affect ecosystems over time. Construction approvals should depend not only on each project\u2019s immediate footprint, but on how it will perform across its entire lifetime \u2013 for example, how much flood risk it creates and how much carbon it emits or saves.<\/p>\n Using a mix of tools to engage diverse groups \u2013 including local communities, policymakers, scientists and educators \u2013 can strengthen understanding and action on coastal change. Examples include holding workshops on the interpretation of satellite-derived data and visualisations, creating interactive StoryMaps<\/a> (digital storybooks using maps, pictures and text to explain a topic), as well as community-driven mapping. <\/p>\n Many coastal and fishing communities located around reclamation sites \u2013 who previously had direct access to the coast \u2013 are now calling to halt further reclamation. By documenting lost ecosystems, tracing flood pathways and highlighting human stories behind coastal change, we can better understand how vulnerable coastal communities are to land reclamation.<\/p>\n Dubai\u2019s The World is a series of manufactured sandy island developments. Some damage is irreversible. Natural coastlines are not just scenic \u2013 they are self-maintaining, shock-absorbing, carbon-storing infrastructure. A moratorium on new reclamation throughout the world is needed \u2013 and a pivot to restoration by rebuilding lost mangroves, protecting tidal creeks and removing \u201chard edges\u201d where possible.<\/p>\n Mapping alone will not stop coastal development. But it can catalyse coalitions, inform policy, expose hidden costs and redirect finance. It can turn a line on a screen into a line in the sand.<\/p>\n![\"aerial](\"https:\/\/www.newsbeep.com\/us\/wp-content\/uploads\/2025\/11\/file-20251010-56-y99p9c.jpg\")
<\/a><\/p>\n
\n PaPicasso\/Shutterstock<\/a><\/p>\n
\n New islands are being built at sea \u2013 but they won’t help millions made homeless by sea-level rise<\/a><\/p>\n![\"close](\"https:\/\/www.newsbeep.com\/us\/wp-content\/uploads\/2025\/11\/file-20251010-66-bb011b.jpg\")
<\/a><\/p>\n
\n Felix Lipov\/Shutterstock<\/a><\/p>\n