In which our extraordinary vessel ventures into the mysterious Sargasso Sea, a floating garden of tangled seaweed and curious marine life, revealing the hidden richness and peculiar stillness of this Atlantic basin, while outside the Nautilus the ocean remains vast and deserted. Deep beneath the waves, Captain Nemo daringly descends into the greatest known ocean depths, exposing the marvels of a shadowy and forbidding underwater world where life fades but the secrets of the earth’s foundation unfold with astonishing clarity.