Draped across the north Pacific Ocean from Hokkaido, Japan, to Russia’s Kamchatka Peninsula, the 22 islands and 30 islets of the Kuril Islands form a necklace of active volcanoes and sea-sculpted coastlines waiting to be explored. Nutrient-rich waters washing this ‘Pacific Rim of Fire’ teem with marine life, from sea otters to harbour seals, Steller sea lions to orca, Dall’s porpoise to beaked and sperm whales. The islands form a natural ‘flyway’ for migratory birds including both horned and tufted puffins, whiskered and rhinoceros auklets and exquisite little murrelets. You’ll Zodiac into flooded calderas, beneath soaring bird cliffs, to landings where brown bears fish for salmon. The fittest may even attempt to attempt to climb a volcano. Every day brings new adventure.