Medes Islands Travel Guide: Snorkeling, Diving & Costa Brava Nature

Snorkelers swimming in clear water around the Medes Islands
The Medes Islands: a protected marine reserve off l’Estartit with some of the clearest waters on the Costa Brava.

The Medes Islands are small in size but big in reputation. Declared a protected marine reserve in 1983, they guard fragile sea grass beds, rocky caves, and some of the richest fish populations in the western Mediterranean. For visitors, that means one of the best snorkel and dive experiences in Spain, just minutes by boat from the Costa Brava town of l’Estartit.

Why Go

Unlike many coastlines, the Medes have avoided overfishing and careless development. Groupers cruise close, barracuda flash in schools, and octopuses hide in rock cracks. Above water, gulls and shags nest on steep cliffs. It’s a rare mix of accessible adventure and strict protection.

How to Visit

Trips leave from the port of l’Estartit—half-day tours are common. Choose between glass-bottom boats (good for families), snorkel trips (3–4 hours), or full diving packages. Advance booking in summer is wise.

Top Options
  • Boat cruise with caves – half-day with coastline views.
  • Snorkeling tour – gear included, 3 hours in clear water.
  • Scuba diving (with local clubs) – for licensed divers, reserve ahead.

Snorkeling & Diving

The islands’ position brings nutrient-rich currents. Expect schools of bream, groupers that pose for photos, and rays on sandy patches. Visibility often reaches 20–25 meters in calm weather. Snorkeling stays near sheltered coves; divers explore walls, tunnels, and deeper shelves.

Best Season

Trips run year-round, but April–October is prime. Summer gives warm water; spring and autumn offer space and often clearer visibility. Winter is quieter, for advanced divers only.

Practical Tips

  • Bring reef-safe sunscreen and a quick-dry towel.
  • Book ahead in July–August; tours fill fast.
  • Use fins carefully—avoid damaging sea grass beds.
  • For kids, start with glass-bottom boats before snorkeling.

Pairings & Day Plans

Combine a morning snorkel with an afternoon on l’Estartit’s beaches, or drive inland to medieval Pals for contrast. For a wider frame—cliffs, gardens, towns—see our Costa Brava Guide.

Travel Ethos

The Medes thrive because rules are strict. Respect no-fishing zones, follow guides’ instructions, and leave no trace. That way, the islands stay vibrant for the next visit.

FAQ

Where are the Medes Islands?
Just off the coast of l’Estartit, Costa Brava, Catalonia, Spain—about 1 km offshore.
Do I need to book in advance?
In summer and weekends, yes. Reserve boat or snorkel tours online to secure spots.
Are the Medes Islands suitable for kids?
Yes. Glass-bottom boats are perfect; snorkeling is safe for confident swimmers with supervision.
Can I dive there without a license?
No. Diving is only for certified divers. Beginners can join guided intro dives in shallow water with local clubs.
What wildlife can I see?
Groupers, barracuda, bream, rays, octopus, and sea grass meadows teeming with smaller fish. Above water: gulls and cormorants.
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