Diving Overview
Japan offers incredible diving diversity from the tropical coral reefs of Okinawa to the temperate kelp forests of mainland Japan. Each region provides unique underwater experiences shaped by geography, currents and seasonal changes.
Water Temperature
Visibility
Dive Depth
Best SeasonPopular Dive Spots
Kerama Islands
Ishigaki Island
Okinawa Main Island
Yonaguni Island
Iriomote Island
Miyako Islands
Ogasawara Islands
Izu Peninsula
Kushimoto
Best Diving Months
Spring (Mar-May)Good
Summer (Jun-Aug)Excellent
Autumn (Sep-Nov)Good
Winter (Dec-Feb)Moderate
Marine Biodiversity
3,000+ fish species
400+ coral species
Manta rays, hammerhead sharks
Sea turtles, mandarin fish
Whale sharks (seasonal)
Local Transport
Shinkansen (Bullet Train)
Domestic flights
Ferries to islands
Monorail (Yui Rail, Naha)
Buses & taxis
Rental cars recommended
Getting There
Haneda Airport (HND) - Tokyo main domestic/international hub, direct to Naha 2h40m
Naha Airport (OKA) - Gateway to Okinawa & Kerama
New Ishigaki Airport (ISG) - For Ishigaki & Iriomote
Narita International Airport (NRT) - Main Tokyo international gateway
Emergency Services
Diving Emergency
+61-8-8212-9242
(24/7 Diving Emergency)
+1-319-448-3483
(DiveAssure, 24/7 Diving Emergency)
+81-3-3812-4999
(DAN Japan)
Tourist Hotline
+81-50-3816-2787
(Japan Visitor Hotline, JNTO (24/7))
#7119
(Medical Consultation (Unsure if ambulance needed))
+81-3-3501-0110
(Tokyo Metropolitan Police English Helpline)