A disappearing beach is one that vanishes periodically (at high tide or during storms) or retreats over time due to erosion and sea-level rise. For example, many low-lying atolls in the Maldives (highest point ~2.5 m) could ultimately be underwater. In practical terms, the sandy shore may “disappear” under the waves each day or permanently recede inland. Global studies now warn that without intervention, half of the world’s sandy beaches could erode significantly by 2100 due to climate change and human activity. Key causes include rising seas, stronger storms, and coastal development disrupting natural sand flow. These factors combine so that “every 10 cm of sea rise… leads to a 10-meter retreat of unprotected coastlines”.
Location (Country) | Key Cause(s) | Examples / Affected Beaches | Best Time / Tip (for travelers) |
Maldives (Indian Ocean) | Sea-level rise and intense storms; island dredging and sand-mining | Almost every resort island (e.g. Hulhumalé, Mathiveri) sees periodic beach loss; some sandbanks (e.g. Vaavu atolls) only appear at low tide | Dry season (Nov–Apr) has calmer weather and lower waves; see sandbanks at mid-/low-tide by boat |
Goa (India) (Arabian Sea) | Southwest monsoon floods & storm surges; erosion from port dredging and groynes | Pernem beaches (Arambol, Mandrem) losing frontage; Candolim, Baina partly narrowed | Post-monsoon (Oct–Feb) beaches are widest; avoid immediate monsoon season (Jun–Sept) when some local beaches may be underwater |
Phu Quoc (Vietnam) (Gulf of Thailand / S China Sea) | Coastal development (resorts blocking shores); east coast erosion by waves | Many western (Duong Dong) beaches barricaded by hotels; Pepper Bay/Starfish Beach noted for lost sand | Dry season (Dec–Mar) best for calm seas; join guided tours to get permission for normally off-limits beach spots |
Morocco (Atlantic & Mediterranean) | Atlantic storm surge and sea-level rise; historical erosion of sandstone (e.g. Legzira) | Legzira Beach’s collapsed arch; Agadir’s peninsula retreat; surf spots (Tamri, Imsouane) with shifting bars | Visiting in spring/fall avoids strong winter storms; surf/beach drives can reveal changing shores (e.g. near Tamri) safely; check local advisories about cliff hazards |
Barbados (Caribbean) | Groynes and seawalls redirecting sand; hurricanes (erosion); rising seas | Mullins Bay/Last-Chance Beach (mostly gone); parts of Bathsheba and South Coast (Miami Beach) narrowing | Use protected west/south beaches (e.g. Carlisle, Mullins) in dry season (Jan–Apr) for safe swimming; note reef/nursery sites — a guided snorkel trip shows erosion impacts and conservation |
The Maldives—a chain of ~1,200 coral atolls in the Indian Ocean—is emblematic of climate risk. With 99% ocean and only 1% land, even modest sea-level rise poses an existential threat. “With the highest point of land only 2.5 meters above sea level,” UN reports warn, “the Maldives could disappear completely beneath the ocean at some point in the future”. Scientific projections also show that about 80% of inhabited islands could become uninhabitable by 2050 if no action is taken.
On a day-to-day scale, this means many resort beaches are gradually eroding or being deliberately modified. The government has undertaken massive land reclamation projects, dredging sand to build up islands. For instance, in 2023 the capital Malé began reclaiming land, with dredgers removing sediment offshore (including from neighboring islands’ beaches) to raise elevations. One resort manager, Shaiz, noted dryly that if questioned about a newly created beach, islanders might say “Call me in five years — this land will be the same”, highlighting uncertainty in long-term stability. Coastal engineer Bregje van Wesenbeeck cautions that atolls are “extremely vulnerable ecosystems, once you start to interfere… you are sort of failing them”.
Experts stress the urgent need for adaptation. As climate specialist Naff Aasim of the Maldives Environmental Authority told the UN in 2024, residents have already seen familiar beaches vanish: “The beach where I used to play when I was a kid, it’s no longer there”. As of Dec 2025, land reclamation is a major part of Maldives’ strategy, but this can also alter currents and deprive other islands of sediment. NOAA and UNESCO cite the Maldives among the most sea-threatened nations worldwide. For travelers, the visible sign of change is that some sandbanks appear and disappear with the tide, and certain lagoon beaches have retreated noticeably over a decade.
In Goa, the “Pearl of the Orient” famous for its wide beaches, the erosion crisis has become strikingly visible. A 2025 study by India’s National Centre for Sustainable Coastal Management (NCSCM) found 90 stretches of beach (23.7 km total) showing significant erosion between 2010–2024. Nearly 27% of Goa’s entire coast (~193 km) is now in severe retreat. Over the past five years alone, erosion-affected area increased by about 3–6%. The problem is worst in North Goa’s Pernem sub-district (including Arambol and Mandrem) where up to ~45% of beaches are disappearing, followed by central and south Goa coasts.
Phu Quoc, Vietnam’s largest island, has drawn mass tourism since the 2010s. As visitors flocked to its beaches like Sao and Truong, infrastructure boomed. But that growth brought conflicts with nature. Unlike purely climate-driven loss, Phu Quoc’s issue is often restricted beach access and local over-development, though erosion plays a role too.
Morocco’s Atlantic coastline is geologically active and heavily populated. 2021 World Bank research found that from 1984–2016, Moroccan Mediterranean shores eroded ~14 cm/year on average, and Atlantic coasts ~12 cm/year – roughly double the global average. In concrete terms, iconic features have already been lost. A dramatic example: in 2016, one of Legzira beach’s famed red stone arches collapsed into the surf. Though Legzira’s beach still exists, the fall of “one of two natural rock archways” highlighted that even slow erosion can abruptly change a coastline. (As the Guardian noted, moving waves likely played a role.)
Across Morocco, tourism and fishing have long adapted to shifting sands. Some beaches retreat by a few meters each decade; others widen seasonally as river deltas shift. Moroccan authorities report investing in dune stabilization and replenishment at key spots. Culturally, coasts are part of Amazigh (Berber) and Arab heritage – villages like Tamri and Imsouane rely on healthy beaches for livelihoods (surfing in Imsouane, turtle nesting in Tamri). Observers warn, however, that coastal road construction sometimes eliminates natural barriers.
Barbados, a low-lying Caribbean island, has felt climate threats acutely. The Barbados government’s 2022 climate risk assessment identifies coastal erosion as a “very high risk” affecting southern and western shores, where much of tourism is concentrated. One dramatic case is Mullins Beach (in Mullins Bay, St. Peter): once flanked by broad sands, today it has shrunk to nearly nothing. For miles the shoreline is now just massive rocks and seawalls. Locals nicknamed it “Last Chance Beach” because the surf crashes up to the car park.
Residents and historians note that a few decades ago one could sunbathe at Mullins; now all that remains are boulders. The cause? Studies and community groups in Barbados point to a combination of poorly designed groynes at nearby Port St. Charles and routine beach replenishment at other bays, which inadvertently starved Mullins of new sand. Barbados’ Coastal Zone Management says these measures, plus climate change, are to blame: as one official put it, “global warming is the main culprit,” but hard structures have made some loss worse.
Further along the coast, Bathsheba and Crane Beaches face erosion from Atlantic storms. After Hurricanes Irma (2017) and Maria (2017), some smaller beaches lost a few meters of sand. The government has since built groynes at certain spots and planted mangroves and seagrass to hold dunes. Yet as the Commonwealth report notes, “shrinking beaches” now threaten Barbados’s famous sun-sea-sand tourism.
Location (Country) | Key Cause(s) | Examples / Affected Beaches | Best Time / Tip (for travelers) |
Maldives (Indian Ocean) | Sea-level rise and intense storms; island dredging and sand-mining | Almost every resort island (e.g. Hulhumalé, Mathiveri) sees periodic beach loss; some sandbanks (e.g. Vaavu atolls) only appear at low tide | Dry season (Nov–Apr) has calmer weather and lower waves; see sandbanks at mid-/low-tide by boat |
Goa (India) (Arabian Sea) | Southwest monsoon floods & storm surges; erosion from port dredging and groynes | Pernem beaches (Arambol, Mandrem) losing frontage; Candolim, Baina partly narrowed | Post-monsoon (Oct–Feb) beaches are widest; avoid immediate monsoon season (Jun–Sept) when some local beaches may be underwater |
Phu Quoc (Vietnam) (Gulf of Thailand / S China Sea) | Coastal development (resorts blocking shores); east coast erosion by waves | Many western (Duong Dong) beaches barricaded by hotels; Pepper Bay/Starfish Beach noted for lost sand | Dry season (Dec–Mar) best for calm seas; join guided tours to get permission for normally off-limits beach spots |
Morocco (Atlantic & Mediterranean) | Atlantic storm surge and sea-level rise; historical erosion of sandstone (e.g. Legzira) | Legzira Beach’s collapsed arch; Agadir’s peninsula retreat; surf spots (Tamri, Imsouane) with shifting bars | Visiting in spring/fall avoids strong winter storms; surf/beach drives can reveal changing shores (e.g. near Tamri) safely; check local advisories about cliff hazards |
Barbados (Caribbean) | Groynes and seawalls redirecting sand; hurricanes (erosion); rising seas | Mullins Bay/Last-Chance Beach (mostly gone); parts of Bathsheba and South Coast (Miami Beach) narrowing | Use protected west/south beaches (e.g. Carlisle, Mullins) in dry season (Jan–Apr) for safe swimming; note reef/nursery sites — a guided snorkel trip shows erosion impacts and conservation |