Sakhalin's second-largest lake — a brackish lagoon up to 28 km long parallel to Mordvinov Bay.

Region: Sakhalin OblastCoordinates: 46°46′N 143°13′E

Tunaycha Lake

Tunaycha lies in Korsakovsky district on Muravyov Lowland, stretching NW–SE. Surface ~174 km², max depth over 40 m. Brackish lagoon: Great and Lesser Tunaycha linked by channels and narrow sea passes. Dozens of fish species; popular ice fishing in winter. Gently indented shores; parts under coastal protection. Rarely on short city tours — for anglers, birders and long drives. Views from capes or tidal flats; pairs with Okhotskoye village or Mordvinov Bay.

How to get there

By car from Korsakov or Yuzhno-Sakhalinsk toward Okhotskoye and Mordvinov Bay.

Best season

June–September for shore; winter for ice fishing

Travel tips & stories

  • Check fishing rules and conservation restrictions.

  • Okhotsk Sea wind rises quickly — waterproof layers essential.

  • Do not walk far on tidal flats — tide returns fast.

  • Carry water and fuel — few stations on the coast.

  • Midges and mosquitoes in summer — repellent and head net.

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