

Best for advanced divers, 2-15m, boat entry, moderate current.
Columbretes Islands is a volcanic archipelago located 50 kilometres offshore from Spain. This site features a unique volcanic seabed with depths ranging from 2 to 15 metres. It is suitable for advanced snorkellers due to the requirement for boat access and the presence of moderate currents. Visibility varies significantly, ranging from 5 to 30 metres. The water temperature fluctuates between 14C and 27C, with conditions most suitable for swimming from June to October. Hazards at this site include jellyfish and strong currents. The habitat supports a variety of Mediterranean reef fish and invertebrates typical of this volcanic environment.
39.89600, 0.68600
Illa Grossa is the only island where visitors receive prior permission from the guards.
Access is by boat from Castellón or Alcocebre, with a crossing duration of approximately 2 hours.
Expected in this region. No sightings logged here yet.
Depth
Up to 15m
Visibility
5-30m
Skill Level
Advanced
Entry
Boat
Boat required
Water Temp
14-27°C
Current
Moderate
Typical Dive
120 min
The site supports a variety of Mediterranean reef fish and invertebrates typical of this volcanic habitat.
No, this site is rated for advanced skill levels due to the presence of moderate currents and the requirement for boat access.
The depth at Columbretes Islands ranges from 2 to 15 metres.
Boat access is required to reach this site, which is located 50 kilometres from the shore.
Yes, Columbretes Islands is a highly rated location for snorkelling.
Visibility ranges from 5 to 30 metres, and water temperatures vary from 14C to 27C. Be aware of potential hazards including jellyfish and strong currents.
Diving at Columbretes Islands in Castellon requires the following certifications: Open Water. Always dive within your training limits.
A 5mm wetsuit is recommended for diving at Columbretes Islands in Castellon. Water temperatures range from 14°C to 27°C.
Divers at Columbretes Islands in Castellon should be aware of jellyfish. These encounters are generally rare and avoidable with proper awareness. Follow local safety guidance and maintain a respectful distance from all marine life.