Diving Brittany | Iroise Seals, Kelp Forests & Atlantic Wrecks

About Brittany

Brittany is the wild Celtic tip of France, where the Atlantic meets granite coasts, kelp forests and some of the richest cold-water biodiversity in Europe. The Mer d’Iroise and Finistère offer the pink-granite boulders of Ploumanac’h, the seal colonies of the Molène archipelago and the scattered remains of the Amoco Cadiz, while Quiberon and Belle-Île hide needle-like rock formations and wrecks. The Golfe du Morbihan is a calm, macro-rich inland sea, Saint-Malo and Dinard face strong tidal currents, and the Crozon peninsula has walls and caves. Diving here is for the well-insulated: water rarely tops 19 °C, and tides rule the calendar, but the reward is lobsters, conger, cuckoo wrasse, grey seals and the chance of sunfish and basking sharks in the blue.

Highlights

• ✓Mer d’Iroise: seals, kelp and the Molène archipelago (UNESCO biosphere)
• ✓Ploumanac’h: pink-granite boulders and gorgonian walls
• ✓Les Aiguilles de Port-Coton: underwater rock needles off Belle-Île
• ✓Amoco Cadiz: scattered wreck remains now a macro-life reef
• ✓Crozon peninsula: walls and caves with lobsters and conger

Getting There

Fly into Brest (BES) or Rennes (RNS), or take the TGV to Rennes and the branch lines to the coast. The dive bases run from Brest and Crozon in the west to Quiberon, Belle-Île, Vannes and Saint-Malo, linked by scenic coastal roads and ferries. Tidal timing is everything.