

Best for beginner divers, 9-40m, boat entry, mild current.
Grotte du Sémaphore at Cap Ferrat offers a diverse underwater landscape featuring a cave, a drop-off, and a reef. Reaching depths between 9 and 40 metres, the site is accessible to beginners who should remain in the shallower sections. Divers encounter various marine life, including common wrasses, scorpionfish, white seabream, and sea stars. Less frequently, observers record Mediterranean moray, lefteye flounder, gurnard, and various nudibranchs like the Cratena slug. The site requires boat access and presents mild currents with visibility ranging from 10 to 30 metres. Due to the overhead cave environment, maintaining buoyancy control is essential. Guided tours are recommended to navigate the layout safely while avoiding contact with the reef and cave walls.
43.68407, 7.32287
Book a guided tour through the on-site dive shop, as the cave section requires good buoyancy control and a guide familiar with the layout. Water temperature drops to 14C in cooler months, so a 5mm wetsuit is worth packing even if the calendar suggests otherwise.
The site is located off Nice.
Recorded at this site
Depth
9-40m
Visibility
10-30m
Skill Level
Beginner
Entry
Boat
Boat required
Water Temp
14-20°C
Current
Mild
Typical Dive
45 min
Best Time
May, Jun, Jul, Aug, Sep, Oct, Nov
Divers regularly encounter wrasses, scorpionfish, white seabream, and sea stars. Less common sightings include Mediterranean moray, lefteye flounder, gurnard, Turkish wrasse, and various invertebrates such as Cratena slugs, cow snails, and brittle stars.
Yes, the site is suitable for beginners, provided they stay within the shallower sections around the cave entrance and reef. Good buoyancy control is required for the overhead cave environment.
The site ranges from 9 to 40 metres in depth, with an average depth of 20 metres.
This is a boat dive; a boat is required to reach the site.
The site is primarily a dive location featuring a cave and drop-off reaching depths of up to 40 metres, making it better suited for scuba diving.
Diving at Grotte du Sémaphore in Nice requires the following certifications: Open Water. Always dive within your training limits.
A 7mm wetsuit or semi-dry is recommended for diving at Grotte du Sémaphore in Nice. Water temperatures range from 14°C to 20°C.
The best months to visit Grotte du Sémaphore in Nice are May, June, July, August, September, October, and November. Conditions outside these months can still be good but are less predictable.
Grotte du Sémaphore in Nice typically has mild currents that most divers can handle comfortably.
Visibility at Grotte du Sémaphore in Nice typically ranges from 10 metres to 30 metres. Conditions vary with weather, tides, and seasons.