If you enjoy discovering Menorca from the water, its marine reserves deserve a place on your list. They protect some of the island’s richest seabeds while remaining open to visitors: you can swim, snorkel and navigate, as long as you slow down and respect the rules for each area.
Menorca has two main marine reserves: the Northern Menorca Marine Reserve, between Punta des Morter, Illa des Porros and Cap Gros, and the Illa de l’Aire Marine Reserve, off the coast of Sant Lluís. This guide explains where they are, what you can see and how to visit without leaving a mark.
What is a marine reserve?
A marine reserve is a part of the sea with special rules to protect its habitats and wildlife. It does not mean that everything is off-limits: each reserve is divided into zones, and the conditions for fishing, diving, navigation and anchoring change from one place to another.
The Balearic Government’s official marine-reserve regulations bring together the current rules and updates. Check them before arranging a boat, fishing or diving trip, since conditions depend on the zone and activity.
Why marine reserves matter in Menorca
Posidonia oceanica meadows, rocky seabeds and nursery areas need time to recover. A reserve helps organise different uses, protects fragile habitats and gives fish a better chance to grow and reproduce.
The protection also reaches the beaches. Seagrass meadows help hold sediment in place and keep the water clear; when their leaves wash ashore, they form wrack banks that can slow erosion. Our guide explains why posidonia is left on Menorca beaches in winter.
Menorca’s two marine reserves
Northern Menorca Marine Reserve
The reserve runs from Punta des Morter, beside La Mola de Fornells, to Cap Gros. It includes the waters around Fornells Bay, Sa Nitja and a coastline with varied seabeds.
Its waters lie close to Cavalleria Beach, Pregonda Beach, Binimel·là Beach and Cala Tirant, among other northern coves. The reserve has different protection levels: some zones prohibit extractive activities and scuba diving, while other uses are regulated.
Illa de l’Aire Marine Reserve
The Illa de l’Aire Marine Reserve protects the coast from Punta des Xoriguer to Punta de Rafalet in south-east Menorca. Its best-known core surrounds the islet of l’Aire and connects with Punta Prima Beach, Biniancolla, Binibeca Beach, Alcaufar and Cala Rafalet.
The area combines rocky seabeds, caves and posidonia meadows. A remarkable variety of marine life gathers around the islet, while the regulations establish a special diving zone and specific rules for navigation and underwater activities.
What can you do in a marine reserve?
- Swim and snorkel: yes, as long as you leave the seagrass, wildlife, shells and plants alone.
- Navigate: yes, while following markers, speed limits and no-anchoring zones.
- Dive: only where and when permitted, with the required authorisations and guidance from approved centres.
- Fish: this is not freely allowed throughout the reserve. Professional and recreational fishing depend on the zone, species, method, licence and current seasons.
- Use a kayak or paddle board: these are gentle ways to explore the coastline, provided you respect bathing areas and navigation rules.
An anchor landing on a sandy patch is not enough. If the chain or the boat’s swing reaches a meadow, anchoring can damage it. It is still happening in 2026: read our report on boats still anchoring on posidonia in Menorca.
How to visit responsibly
Bring a mask to observe, but leave everything where you find it. Keep your distance from animals, never feed fish and avoid stirring up the seabed with your fins. If you are boating, plan with the official Balearic posidonia map and check the rules before setting out.
A marine reserve is not a backdrop: it is a living place. The best visit is the one that lets you return next summer and find the seabed just as full of life.
Sources consulted
- Balearic Government: marine-reserve description: areas, objectives and natural values.
- Official plan and zoning of the Northern Marine Reserve: protection levels and regulated activities.
- Official plan of the Illa de l’Aire Marine Reserve: special diving and general zones.
- Basic marine-reserve regulations: current decrees and resolutions.
- Menorca Playas content: the linked beach guides and posidonia articles.
The cover is an AI-generated illustration of a grouper, or anfós, in an imaginary Mediterranean habitat.
