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Zenisu

Type:
Scuba Diving
Entry:⚓Boat Entry
Difficulty:Advanced
Tags:
Reef
About This Dive Spot

An offshore dive area made up of three reefs in the Izu Seven Islands region, located southwest of Jinzu Island. Access is remote and requires a charter boat, with long one-way travel times depending on departure point. The reefs are known for very large concentrations of fish, including schooling migratory species and large numbers of butterflyfish. Encounters may include sharks and green sea turtles, and there are reports of whales in the area.

Safety & access
Hazards, restrictions, and required precautions.

Hazards

Restricted accessDangerous wildlife

Safety notes

This is a remote charter-boat site; plan conservatively for offshore conditions and be prepared for potential encounters with large pelagic wildlife.

Access restrictions

Can only be reached by charter boat; travel times are long from common departure points.

Where is this?
Map location of Zenisu
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Local intel
Community notes to help plan your visit.

Access, coral, life, crowds, and facilities.

Access

Remote offshore site requiring a charter boat; expect significant one-way transit time.

Aquatic Life

Very high fish density with schooling migratory fish and large numbers of butterflyfish; sharks, green sea turtles, and whales are also mentioned.

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Frequently Asked Questions

What's the best entry point at Zenisu?
Entry at Zenisu is detailed in the spot description above. Look for specific landmarks, access paths, and any tide or condition requirements. Local divers often share updated entry tips in their dive logs.
What conditions are best for diving Zenisu?
Optimal conditions at Zenisu depend on several factors including tide, wind, and season. Check recent dive logs for current condition reports and patterns. Generally, calmer seas and high tide provide better visibility and easier entry.
What is the maximum depth and typical visibility at Zenisu?
Depth and visibility information for Zenisu can be found in the spot details and recent dive logs. Conditions can vary significantly based on weather, tide, and season. Always plan your dive according to current conditions and your certification level.
Are there any safety considerations or local etiquette at Zenisu?
When diving Zenisu, respect local regulations, marine life, and other water users. Be aware of any specific hazards like currents or boat traffic mentioned in the spot description. Follow Leave No Trace principles and local diving etiquette.