No, the United Nations did not predict in 1988 that all 1,196 islands of the Maldives would drown between 2008 and 2018.

The UN- UNEP only planned a study at the time.

The specific claim is a misattribution of statements by Maldivian government officials reported in contemporary news coverage.

On 26 September 1988, an AFP report (published in Australia’s The Canberra Times and elsewhere) stated:

“A gradual rise in average sea level is threatening to completely cover this Indian Ocean nation of 1196 small islands within the next 30 years, according to authorities.”

Maldives Environmental Affairs Director Hussein Shihab was quoted saying an estimated rise of 20- 30 cm in the next 20- 40 years “could be ‘catastrophic’ for most of the islands, which were no more than a metre above sea level.”

The same report noted the United Nations Environment Programme was planning a study and mentioned a separate (also unrealized) concern that drinking- water supplies might dry up by 1992.

This was a statement from Maldivian officials (following severe flooding in 1987 that damaged the capital Malé), not a formal UN scientific prediction or IPCC assessment.

President Maumoon Abdul Gayoom had raised sea- level concerns at the UN and Commonwealth meetings around 1987– 88, describing a potential “death of a nation,” but those were political warnings rather than dated quantitative forecasts of total submersion by a specific year.

Early media and some expert commentary in the late 1980s sometimes framed low- lying atolls as potentially disappearing on multi- decade timescales under high- end sea- level scenarios of the era, but the precise “all islands gone by ~2018” wording traces to the 1988 AFP report of local authorities.

The Maldives still exist.

The islands have not been submerged.

Tourism infrastructure has expanded (including airport developments), and studies have documented that many reef islands have remained stable in area or grown through natural accretion and sediment processes, even as relative sea level has risen.

Sea level has risen. Local tide-gauge and other data show relative sea-level rise on the order of roughly 3+ mm/year in recent decades in the region (e.g., ~3.4 mm/year averages cited for periods including 1987- 2018). Global mean sea level has accelerated compared with the early 20th century.

The 20–30 cm rise referenced as potentially catastrophic has not occurred on that short timescale; cumulative rise since the late 1980s is substantially less.

Vulnerability remains real.

Most islands are very low- lying (typically <1–2 m above mean sea level).

Flooding, erosion, saltwater intrusion into freshwater lenses, and storm- related impacts are ongoing concerns. Longer- term projections (e.g., toward 2100) under higher- emission scenarios continue to flag substantial risks of inundation or uninhabitability for large portions of the archipelago without adaptation (seawalls, land reclamation, elevated structures, etc.).

Contemporary scientific estimates circulating in the late 1980s projected global sea- level rise on the order of tens of centimeters to a couple of meters over a century under various scenarios.

Maldivian officials and leaders highlighted the extreme vulnerability of their low- lying islands and used strong language about potential national catastrophe.

UNEP facilitated studies and the UN provided a forum, but there was no official United Nations prediction that the entire archipelago would be underwater by 2018.

The Maldives government has pursued adaptation and international advocacy on the issue for decades.

The Maldives hosted the Small States Conference on Sea Level Rise (14–18 November 1989).

The resulting Male Declaration on Global Warming and Sea Level Rise (transmitted to the UN) expressed deep concern about the threat of sea- level rise to low-lying island states, called for international cooperation, monitoring, and action (including support from UNEP, WMO, and others), and recognized the emerging IPCC process. It did not contain a prediction that the Maldives would drown by 2018.

A 1988 news report of Maldivian officials warning of potential catastrophic effects from modest sea- level rise within a few decades has been widely circulated (especially in skeptic commentary around 2018) as a failed “UN and experts predicted total drowning by 2018” claim.

The islands are still above water, sea level has risen more slowly than the most alarming short-term framing implied, and natural island dynamics plus human adaptation have so far prevented the worst outcomes of that particular warning.