© D.S ATAMI, 413-0023 Atami-shi
Atami Kosoga Cave
★★★★☆
(230)
Kosoga Cave in Atami, Shizuoka, is open Nov–Apr and features a 40m semi-enclosed cave at 6–12m depth, ideal for beginners. Its wide space and open ceiling let sunlight create a stunning blue gradation. Just 10 minutes by boat from Atami Port, it’s both scenic and accessible.
The cave hosts schools of snappers, rockfish, and mackerel flowing like a river under light, with nearby sands hiding sharks and bullhead sharks.
Dive Activity
Top Wildlife Sightings
Wildlife Sightings are Based on User Generated Content
Alamy-WaterFrame
19 Sightings
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iStock/ultramarinfoto
Wrasse
12 Sightings
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Alamy/Reinhard Dirscherl
Octopus
1 Sightings
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Alamy-Andre Seal
Damselfish
18 Sightings
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AdobeStock-JirinaVFR
Pufferfish
14 Sightings
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SSI-Peter-Schinck
Nudibranch
9 Sightings
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iStock-mirecca
Surgeonfish
8 Sightings
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AdobeStock_Vladimir Wrangel
Boxfish
8 Sightings
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7
Shutterstock-Henry_and_Laura_Whittaker
Grouper/Basslets
7 Sightings
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5
iStock-Hoatzinexp
Jackfish
4 Sightings
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