The eighth Ibiza and Formentera Maritime Forum has brought together marine scientists, environmental organisations and representatives of the nautical sector to discuss practical measures for protecting the Mediterranean, with stronger enforcement against harmful anchoring, better port infrastructure and research into damaged seagrass meadows among the priorities.

The main conference took place in Ibiza on Wednesday, 21 October 2026, as part of a programme running from 19 to 22 October. Discussions focused on the environmental pressures affecting the waters around Ibiza and Formentera, including recreational boating, pollution, the restoration of marine habitats and the threat posed by invasive species.

The proposals highlighted a central challenge for the islands: protecting the marine environment while maintaining the maritime activities and businesses that form an important part of the local economy.

Stronger Controls on Anchoring and Recreational Boating

One of the main subjects was the impact of boats anchoring over Posidonia oceanica seagrass meadows. These underwater habitats play an important role in Mediterranean coastal ecosystems, but can be damaged by anchors and chains.

Diego de la Viña, founder of Essence Sailing, proposed integrating automatic warnings about seagrass meadows into marine navigation systems such as Navionics and C-MAP. The aim would be to alert boat operators to sensitive areas directly through the equipment they already use, reducing reliance on separate applications.

His proposals also included improving seabed mapping, expanding strategically located ecological mooring buoy fields and making authorised anchoring areas easier to identify.

The discussion also highlighted the need to reduce other impacts associated with recreational boating, including excessive speed in sensitive areas, noise, pollution from cleaning products and the risk of oil spills.

Just 18 Fines Among 4,813 Vessels Detected Anchoring on Seagrass

The effectiveness of enforcement was another major concern.

According to figures from Ibiza & Formentera Preservation cited during the forum, 4,813 vessels were detected anchoring on seagrass meadows around Ibiza and Formentera in 2025. Eighteen fines were imposed in relation to these cases.

The figures underline the difference between detecting potentially harmful activity and ensuring that environmental rules are enforced. The organisation has called for more environmental officers and additional resources so that information campaigns and preventative measures can be supported by effective monitoring.

Pedro Francisco Gil Martín, president of the Association of Rental Companies of the Balearic Islands (AECIB), also called for more inspections and closer cooperation between public authorities, ports and businesses.

He highlighted concerns about unauthorised activity in the boat-hire sector, arguing that inadequate professional standards can create risks for customers and the marine environment. For self-drive rentals, he stressed the importance of clear instructions on navigation and anchoring, with GPS route monitoring where necessary.

Better Port Facilities to Prevent Water Pollution

The forum also considered how ports could make it easier for boat operators to manage wastewater responsibly.

De la Viña proposed installing connections at moorings that would allow greywater and blackwater to be discharged into appropriate reception systems. The objective is to make wastewater disposal more practical and accessible, reducing the risk of improper discharges into the sea.

Other proposed measures included stronger safeguards against oil spills and better management of activities that can affect water quality.

The discussion emphasised that environmental protection depends not only on rules governing boat operators but also on infrastructure that makes responsible practices easier to follow.

Scientists Examine Options for Restoring Seagrass Meadows

Marine conservation was also addressed through research into the restoration of Cymodocea nodosa, a seagrass species that can help support coastal ecosystems and, under suitable conditions, facilitate the establishment of Posidonia oceanica.

Beatriz Marín, a researcher at the Mediterranean Institute for Advanced Studies (IMEDEA, CSIC-UIB), presented work undertaken with fellow researcher Fiona Tomás examining existing studies on restoration techniques.

One possible approach involves germinating seeds in a laboratory before transplanting young plants to the seabed. However, the methods still require refinement, and young plants must be protected from animals that feed on them.

Marín also highlighted administrative barriers that can delay restoration projects, including opportunities to recover seagrass fragments displaced during storms. She called for more efficient procedures and stronger collaboration between researchers and public authorities.

The research also reinforces an important principle: restoring damaged habitats cannot replace action to prevent further deterioration. Reducing pollution and avoiding destructive anchoring remain essential to giving seagrass meadows a chance to recover.

Invasive Algae Raises Concern for the Balearic Islands

The potential arrival of invasive marine species was another subject addressed at the forum.

Marta Florido, a researcher at the University of Seville, presented research into Rugulopteryx okamurae, an invasive brown alga that has spread rapidly in parts of southern Spain.

The species has covered more than 80% of the seabed in certain areas of the Bay of Algeciras in less than two years, according to the research discussed at the event. Its spread can alter marine communities, with some species declining while others better adapted to the changed conditions become more prevalent.

Research published in 2026 in Marine Environmental Research documents changes in affected marine communities, including a trend towards greater ecological homogenisation.

According to the information presented at the forum, the alga had not yet become established in the Balearic Islands. Researchers stressed the importance of maintaining surveillance and encouraging fishermen, divers and sailors to report potential sightings, allowing authorities to investigate possible introductions early.

Preventing the species from becoming established would be preferable to attempting to control it after widespread colonisation.

Turning Scientific Knowledge Into Practical Action

Across the discussions, a recurring theme was the need to translate scientific evidence and professional expertise into measures that can be implemented and enforced.

The proposals included improving nautical technology, strengthening environmental surveillance, upgrading port infrastructure, professionalising boat-hire operations, reducing pollution and making marine restoration more practical.

The forum's wider programme also addressed climate change and the green transition, reflecting the relationship between marine health, coastal communities and the economy of the islands.

Organised by a group of environmental and business organisations, the annual forum provides a meeting point for public institutions, researchers, companies and civil society to discuss the future of the marine environment around Ibiza and Formentera.

The eighth edition continues through Thursday, 22 October, with screenings of Ocean with David Attenborough scheduled in Ibiza and Formentera as part of its closing programme.

The discussions in Ibiza make clear that protecting the Mediterranean will require more than awareness alone. The challenge is to turn proposals into coordinated action, supported by adequate funding, monitoring and cooperation between the organisations that depend on the sea and those responsible for protecting it.