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Official Wakayama diving guide with protected giant salamander context.
Dive Spot Guide•
Koza River Nukumi
Koza River Nukumi is a shore-access freshwater river dive for salamanders.
Shore-access freshwater river site in Wakayama with clear water, shallow pools, and a protected salamander focus.
About Koza River Nukumi
Koza River Nukumi is a shore-access freshwater river dive in Wakayama’s Koza area, known for clear water, shallow pools, and the protected Japanese giant salamander. It suits beginner-friendly river dives, freediving, and snorkeling when conditions are calm enough to work the rock-lined current, with the best salamander viewing usually upstream from Furuza town.
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Where Is Koza River Nukumi?
Community sourced coordinates.
Featured Operators
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Koza River Nukumi Planning Details
Depth range, seasonality, and planning context.
Reported Depth
3m - 7m
Depth Note
Shallow river pools and rock formations keep the site low-depth and close to the bottom.
Typical Conditions
Clear freshwater, shallow pools, moderate current, and cooler water than ocean sites.
Safety & Access At Koza River Nukumi
Site conditions, restrictions, and access requirements.
Site Conditions
Cold waterStrong current
Safety Notes
Cool freshwater, moderate current, and sharp rocks make buoyancy and weighting important.
Access Restrictions
Shore access only; plan through a local operator because conditions and timing are specific to the river.
Legal Notes
The Japanese giant salamander is a protected natural monument, so observe without disturbing wildlife and follow local river rules.
Local Intel For Koza River Nukumi
Community notes to help plan your visit.
Scuba Diving
Freshwater river diving with options to dive downstream or focus on the upstream salamander area.
Freediving
Shallow river sections make it workable for freediving, but it is still a freshwater river outing with local conditions and current to manage.
Snorkeling
The shallow river sections and clear water make it snorkel-friendly on calm days.
Wildlife at Koza River Nukumi
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Koza River Nukumi
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Koza River Nukumi
Average conditions based on logged dives & visits.
No community dive data has been logged here yet. Be the first to record a dive and seed the averages.
