Takarajima Island

Best time to dive

July to September; December to March

What you might see

• NudibranchLikely

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

Certification & difficulty

Advanced Open Water - advanced conditions (currents/depth); dive within your training.

Snorkelling

Snorkel-friendly - Yes - skin-diving/snorkeling practiced nearby at Cape Ogon, Shakotan

Safety notes

Cold water/hypothermia risk (near-freezing winter temps); boat entry/exposure to Sea of Japan swell; remote location with limited emergency services; rapidly changing weather

Permits & fees

- (no per-diver government permit/fee documented; part of Niseko-Shakotan-Otaru Kaigan Quasi-National Park; only standard dive-shop boat/guide fees found) - VERIFY

Permits and operators change - confirm before booking.

Location

Nearest hub: Shakotan