Japan · Hachijojima, Izu Islands

Nazumado

Best time to dive

September to October; May to July

What you might see

  • Dogtooth tunaLikely
  • Hammerhead sharkLikely
  • Moray eelLikely
  • NudibranchLikely
  • Pygmy seahorseLikely
  • Sea turtleLikely
  • SeahorseLikely
  • Thresher sharkLikely

Sightings are seasonal probabilities, not promises - even in peak season nature does its own thing.

Certification & difficulty

Technical - advanced conditions (currents/depth); dive within your training.

Snorkelling

Not a snorkel site - Limited - currents and swell make it primarily a scuba site; nearby calmer bays (e.g. Sokodo) better suited to snorkeling

Safety notes

Strong, unpredictable currents; powerful ocean swell; slippery rope-assisted ramp entry; rapidly changing conditions; remote island location

Permits & fees

- (no specific government permit/park fee documented; standard local dive-shop guiding/gear-rental fees apply)

Permits and operators change - confirm before booking.

Location

Nearest hub: Hachijojima

This profile is desk research, compiled from public sources - not a first-hand dive report. Coordinates are approximate.