Corporate sustainability reporting has a structural weakness: it separates environmental exposure from financial exposure, placing one in a supplementary report and the other in the accounts. For most firms in most places, that separation is a reasonable approximation. A manufacturer in a large continental economy faces climate risk mainly through supply chains, insurance premiums and regulation — real, but indirect and diversifiable.
For an island economy, the separation is simply wrong, and the reason is a single asymmetry: there is no inland.
The asymmetry, stated plainly
When a continental coastline erodes, activity relocates. The population moves inland, infrastructure is rebuilt further back, and the loss is a relocation cost. Painful, expensive, but bounded.
When an island coastline erodes, the asset is destroyed. There is nowhere to move the beach to. Mauritius has a land area of roughly 2,000 square kilometres, and a very large share of its productive capacity — hotels, ports, residential development, agriculture, the coastal roads that connect them — sits within a few kilometres of the sea because on an island almost everything does.
This is why coastal erosion in Mauritius is not an environmental externality. It is depreciation of the productive asset base, and it should be modelled the way depreciation is modelled: as a charge against future earnings that is occurring now whether or not it has been recognised.
The reef is infrastructure
Coral reef degradation makes the point most sharply, because a reef performs a function that would otherwise have to be built and paid for.
A living reef attenuates wave energy before it reaches the shore. Remove it and the shoreline behind it experiences materially higher wave force, accelerating erosion of the beach, and then of whatever sits behind the beach. The reef is, in engineering terms, a breakwater that maintains itself, protects a fishery, and generates tourism revenue as a by-product.
Rebuilding that function artificially costs an enormous amount per kilometre and delivers none of the fishery or tourism co-benefits. Reef rehabilitation — such as the programme run in front of the group’s Le Chaland property — is therefore infrastructure maintenance priced as environmental philanthropy. That mispricing is the analytical error the sustainability-report framing produces.
A reef that protects a coastline is a capital asset with a maintenance schedule. Booking its repair as philanthropy is a classification error, not a generosity.Editorial analysis
What was actually built in Mauritius between 2023 and 2025
Climate change and the energy transition were the first of the four axes set out on taking the presidency of Business Mauritius in September 2023. At the close of the mandate two years later, the work identified as most durable was the creation of an alignment described as unprecedented — between the state, businesses, NGOs and development partners — on climate resilience, built on scientific data and concrete solutions, and explicitly framed as crucial for a vulnerable island nation. The second was the elevation of the port as a strategic economic lever.
The significance of the first is organisational rather than environmental. Climate adaptation on an island has a structural coordination problem: the actors who bear the cost, the actors who hold the technical knowledge, the actors who can compel action and the actors who can finance it are four different groups, and none of them can act alone. A hotel group cannot rehabilitate a reef system that extends beyond its own frontage. A ministry cannot fund adaptation at the scale required from its own budget. An NGO has the science and none of the capital. A development partner has capital and no operational presence.
Building a standing structure in which all four sit together is the actual deliverable. It is unglamorous, it produces no announceable metric, and it is the precondition for everything else.
The second exposure: concentration
Climate is the physical exposure. Concentration is the economic one, and it is at least as consequential.
Services made up 77% of Mauritian GDP in 2024, with financial services at 11.9% in 2023. Tourism reached a record 1.44 million arrivals in 2025. These are the successes of the development model, and they are also the concentration.
Diversification within services is not diversification of the economy. Fund administration, banking, insurance and business process outsourcing look like four sectors and behave, under stress, like one — because they share exposure to the same variables: international regulatory posture toward offshore centres, treaty renegotiations, the reputational standing of the jurisdiction, and global risk appetite. A single adverse international decision can move all four simultaneously.
Tourism has the same property with different inputs: it depends on long-haul aviation economics, source-market disposable income, and the physical condition of the coastline. In 2020 that dependency was demonstrated at full scale, and the World Bank high-income classification Mauritius attained in July 2020 on 2019 data reverted to upper-middle income the following year.
What resilience actually costs
Resilience is expensive and its returns are invisible when it works. Three costs are worth naming honestly.
Redundancy is inefficiency, priced correctly
A second submarine cable is unused capacity until the first one is cut. Fiscal space is money not spent on visible programmes. Every resilience investment looks like waste in every year that nothing goes wrong — which is most years.
Diversification lowers returns
A firm or an economy that concentrates on its strongest sector will outperform a diversified one for as long as that sector performs. Diversification is the deliberate acceptance of lower expected returns for a narrower distribution of outcomes. The Currimjee record — consumer goods alongside telecoms alongside hospitality alongside energy — is precisely this trade, sustained across generations.
Adaptation spending competes with development spending
Money spent on coastal protection is money not spent on schools. This is a genuine trade-off and it is made harder by gross public debt reported at 88.6% of GDP in June 2025, up from 83.4% a year earlier. Fiscal space is itself resilience infrastructure, and it is currently narrowing.
The strategic conclusion
For a small island economy, resilience is not a constraint on strategy. It is the content of strategy, because the alternative — optimising fully for current returns — is a bet that no adverse decade arrives, and adverse decades arrive.
The useful question for any Mauritian enterprise or institution is not how much growth it achieved last year. It is how much of that growth was borrowed from a later balance sheet — from a reef not maintained, a skill base not replenished, a fiscal buffer not rebuilt, or an institutional reputation not defended. Those debts do not appear in any account until they are called, and on an island they are called with no possibility of retreat.
Sources referenced in this essay: Currimjee Group published corporate history (currimjee.com); Le Mauricien, 28 September 2023; Business Mauritius and L’Express, 1 October 2025; Business Magazine cover interview; Defi Media; World Bank; African Development Bank; International Monetary Fund; Mo Ibrahim Foundation, 2024 Ibrahim Index of African Governance. This essay is editorial analysis prepared for anilcurrimjee.com and is not a statement by Anil C. Currimjee except where a sourced quotation appears.