The sea is under pressure. Between biodiversity loss, pollution, ocean warming, and threats to coastal communities, marine sustainability demands a new approach: integrated, systemic, and geared toward spatial planning and balancing protection with development.
The sea is not just an ecosystem to protect. It is a strategic component of today’s economies, a natural infrastructure that regulates the climate, supports food production, and enables transport, energy, and tourism. For instance, ocean surfaces absorb around 25% of the CO₂ generated by human activity, playing a crucial role in global climate balance. At the same time, the sea supports over 80% of world trade, acting as a logistic and productive hub on a planetary scale. And yet, this vital resource is now in distress.
The pressures exerted by human activities (such as intensive fishing, extractive industries, maritime transport, and coastal urbanization) have reached levels that compromise ecological balances once thought stable. Global warming is altering ocean temperatures, with cascading effects on marine ecosystems. CO₂ emissions, in addition to fueling that warming, are also increasing ocean acidity. Since 1985, the average pH level of surface waters has dropped by 15%, endangering sensitive species like corals and mollusks. Each year, between 19 and 23 million tons of plastic enter rivers and seas. The total volume of plastic in the oceans is estimated at between 75 and 199 million tons. Microplastics are now a persistent element in marine food chains.
These impacts threaten biodiversity: over one-third of marine mammals and nearly a third of sharks, rays, and reef-building corals are at risk of extinction. Coastal communities are also in danger, increasingly exposed to erosion, rising sea levels, the loss of fish stocks, and the intensification of extreme weather events. The consequences are direct: reduced livelihoods, food insecurity, economic instability, and fragile infrastructure—especially in low-income countries and small island states.
In crisis is not only the marine environment, but its systemic function: that of an interconnected platform on which global economic supply chains and critical climate processes depend. Marine sustainability, therefore, is not about romantic notions of untouched nature. It means urgently rethinking how we design, use, and govern maritime space. It is not just an ecological issue—it is a challenge of planning, technological innovation, and intergenerational justice. The sea is a finite resource. We must decide whether to treat it as such or continue exploiting it as if it were limitless.
Marine sustainability is not just about reducing pollution or creating new protected areas. It means addressing in an integrated way the complex interactions between human activity, coastal ecosystems, and marine resources. In other words, it’s not about conserving the sea as it was, but about reimagining its use—equitably, efficiently, and with long-term vision.
A first step is integrated coastal zone management, which links environment, economy, and society at local and regional scales. In many parts of the Mediterranean, lack of coordination between ports, industrial areas, tourism, and natural zones leads to conflicts and environmental degradation. What’s needed is a systemic approach, one that reconciles territorial needs with the ecological capacity of marine and coastal systems.
Another key lever is maritime spatial planning. This tool allows societies to define, transparently and inclusively, where and how various activities can take place at sea: fishing, transport, renewable energy production, environmental protection, scientific research. Also crucial is the idea of a sustainable blue economy—understood not simply as economic growth in marine environments, but as the ability to create long-term value while respecting ecological limits. That means promoting low-impact supply chains, innovating production models, and integrating environmental protection into development strategies.
Every action must also be grounded in active protection of marine ecosystems, based on scientific data, continuous monitoring, and rapid response capacity. Protected areas, artificial reefs, and habitat restoration projects are important tools, but on their own they are not enough.
Building a sustainable relationship with the sea requires conscious design choices, clear rules, and targeted public investments. It cannot depend solely on the goodwill of private actors. Instead, it calls for effective policy frameworks, shared strategies, and practical tools to guide the decisions of governments, companies, and designers.
There are already clear international references that outline priorities and responsibilities:
These are not just declarations of intent. They form the concrete basis for intervention plans, design strategies, and training paths.
Ensuring marine ecosystem sustainability requires new skills—capable of connecting environmental, economic, spatial, and social knowledge. Universities play a vital role, not only in producing knowledge, but in training professionals who can handle the complexity of maritime governance.
At Università Iuav di Venezia, these themes are not peripheral, but integral to a project-based approach that views the sea as a space to plan, inhabit, and manage. The university has long worked on maritime spatial planning, climate adaptation of coastal areas, sustainable port infrastructure, and coastal regeneration. It does so by bringing together urban planners, architects, economists, designers, environmental experts, and policy specialists in a strongly interdisciplinary logic.
This vision is embodied in the Venice Water Lab, an international center for advanced studies on water and the sea, created by Università Iuav di Venezia in partnership with the Italian Navy’s Institute for Maritime Military Studies, the National Research Council (CNR), and other public institutions. Located in the Venetian lagoon, the Polo is both a symbolic and tangible environment—where freshwater meets saltwater, and where nature, history, and innovation intersect.
The Polo addresses marine issues through a post-sustainability lens and offers advanced training in blue economy, renewable marine energy, infrastructure, and maritime spatial planning. Its programs aim to prepare professionals who can serve public institutions and anticipate the challenges of a fast-evolving global market.
Specifically, the Polo’s educational offer, entirely in English, includes three master's degree programs: