

Best for advanced divers, 20-35m, boat entry, strong current.
Mikomoto Island is a small, uninhabited island located 10 kilometres off the southeast coast of the Izu Peninsula. This drift and reef site is defined by its challenging environment, featuring strong currents and shoals that have historically served as a significant navigational point. Divers typically experience depths between 20 and 35 metres, with an average of 25 metres. Due to the fierce currents and depth, this site is strictly for advanced divers. Access is exclusively by boat. Visibility ranges from 14 to 30 metres, and water temperatures fluctuate between 14 and 25 degrees Celsius depending on the season. The island is marked by the Mikomotojima Lighthouse, the oldest stone lighthouse in Japan.
34.57604, 138.94140
If you are a beginner, choose a course that suits your skill level and aim for hammerheads while getting used to the waters of Mikomoto.
Access via boat from Shimoda or Yumigahama. The nearest station is Izukyu Shimoda Station, reachable from Tokyo by the Odoriko limited express train.
Recorded at this site
Depth
20-35m
Visibility
14-30m
Skill Level
Advanced
Entry
Boat
Boat required
Water Temp
17-25°C
Current
Strong
Typical Dive
30 min
Best Time
Jul, Oct
No, this site is intended for advanced divers only due to the strong currents and significant depths.
The depth at this site ranges from 20 to 35 metres, with an average depth of 25 metres.
Access to Mikomoto Island is by boat only, as it is located 10 kilometres from the shore.
The best months for diving at Mikomoto Island are July and October.
The primary hazards include deep water and strong, fierce currents.
Diving at Mikomoto island in Shimoda requires the following certifications: Advanced. Always dive within your training limits.
A 5mm wetsuit is recommended for diving at Mikomoto island in Shimoda. Water temperatures range from 17°C to 25°C.
Mikomoto island in Shimoda can have strong currents. Advanced experience with drift diving and current navigation is recommended.
Visibility at Mikomoto island in Shimoda typically ranges from 14 metres to 30 metres. Conditions vary with weather, tides, and seasons.