www.tsuruokacity.com · Official Tourism
Official Tsuruoka summer tourism context for the local seasonal travel window.
Dive Spot Guide•
Yotsushima Jetty
Summer jetty dive in Yotsushima with fish-rich reefs.
Scuba DivingBoatBeginner
Artificial ReefReef
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A summer-only jetty dive off Tsuruoka with boat access, harbor facilities and abundant reef fish around the Four Islands.
About Yotsushima Jetty
Yotsushima Jetty is a rare jetty-style island dive off Tsuruoka's Four Islands, reached by ferry-pier boat transfer and a short ride to the site. The reefs around Ruzaoan Island hold large schools of fish and lively small-life scenes, and the dive operates only in the summer season from July through October. Harbor parking and flush toilets make it a practical day-trip setup.
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Research Estimate At Yotsushima Jetty
Conservative baseline from public research. No community dives logged yet.
AccessSimple entry
Aquatic LifeExceptional variety
FacilitiesExcellent facilities
Crowd / PopularityQuite busy
CurrentNo current
SurgeFlat calm
Where Is Yotsushima Jetty?
This spotNearby spots
Community sourced coordinates.
Yotsushima Jetty Planning Details
Depth range, seasonality, and planning context.
Reported Depth
8m - 12m
Depth Note
The site averages around 8-10 m and tops out near 12 m.
Best Season
July through October.
Typical Conditions
Summer-only jetty diving with shallow 8-12 m structure, clear water and lots of fish activity around the islands.
Safety & Access At Yotsushima Jetty
Hazards, restrictions, and access requirements.
Key Hazards
Boat trafficRestricted access
Safety Notes
Watch ferry traffic near the pier, respect the seasonal window and keep a tidy profile around the jetty structure.
Access Restrictions
The site is open only from July through October.
Legal Notes
Use the ferry-pier access and follow local harbor rules during the seasonal operating window.
Local Intel For Yotsushima Jetty
Community notes to help plan your visit.
Scuba Diving
A shallow jetty-style reef dive with steady terrain and good opportunities for wide-angle and macro viewing.
Freediving
The shallow profile may suit experienced freedivers on calm days, but the site is more naturally a scuba jetty dive.
Snorkeling
A calm-day snorkel can work near the surface, but the richest fish life is better appreciated on scuba.
Yotsushima Jetty Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Yotsushima Jetty.
Current Snapshot
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Visibility Outlook
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Exposure Profile at Yotsushima Jetty
Directional shelter context for incoming swell.
Exposure Note
Hourly forecast data is not available yet.
Wildlife at Yotsushima Jetty
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Yotsushima Jetty
Community dive logs and visit reports for this site.
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Dive Spot Log Averages At Yotsushima Jetty
Average conditions based on logged dives & visits.
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Yotsushima Jetty Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
Yotsushima Jetty Guide - Sources and Updates
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Research Sources
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