

Best for intermediate divers, shore entry, moderate current.
Located on the Crozon Peninsula, Île Tristan is a protected island within the Iroise Marine Park. Divers and snorkellers access the rocky reef perimeter via a stone causeway at low tide. The site features moderate currents and visibility ranging from 5 to 15 metres. Water temperatures fluctuate between 11C and 16C throughout the year. The habitat supports a variety of temperate marine life, including reef fish and invertebrates typical of the region. Due to the presence of strong currents, surf, and potential entanglement hazards, this site is recommended for intermediate divers. It offers a rewarding experience for those comfortable with cold-water conditions.
48.09750, -4.33700
The island can only be reached on foot from Douarnenez during low tide, and you must be vigilant about the rising water to avoid being trapped.
Access is possible on foot from the Cale du Guet in Douarnenez during low tide. Access outside of these times is not permitted except for guided tours.
Expected in this region. No sightings logged here yet.
Visibility
5-15m
Skill Level
Intermediate
Entry
Shore
Water Temp
11-16°C
Current
Moderate
The site supports a variety of temperate marine life, including various reef fish and invertebrates common to the Iroise Marine Park habitat.
No, this site is rated for intermediate divers due to the presence of strong currents, surf, and potential entanglement hazards.
Access is via a shore entry, specifically using the stone causeway that connects the island to the mainland at low tide.
Yes, the site is suitable for snorkelling and holds a rating of 4/5 for this activity.
Visibility ranges from 5 to 15 metres, with water temperatures between 11C and 16C and moderate currents.
A drysuit recommended is recommended for diving at Île Tristan in Douarnenez. Water temperatures range from 11°C to 16°C.