Which of these is a hypothetical lost land located in either the Indian or the Pacific Ocean?

Lemuria or Limuria is a hypothetical lost land located in either the Indian or the Pacific Ocean, as postulated by a now-discredited 19th-century scientific theory. The idea was then adopted by the occultists of the time and consequently has been incorporated into pop culture. Some Tamil writers have associated it with Kumari Kandam, a mythical lost continent with an ancient Tamil civilization located south of present-day India in the Indian Ocean.

Originally, Lemuria was hypothesized as a land bridge, now sunken, which would account for certain discontinuities in biogeography. This idea has been rendered obsolete by modern theories of plate tectonics. Sunken continents such as Zealandia in the Pacific, Mauritia and the Kerguelen Plateau in the Indian Ocean do exist, but no geological formation under the Indian or Pacific Oceans is known that could have served as a land bridge between continents.

The idea of Lemuria was subsequently incorporated into the proto-New Age philosophy of Theosophy and subsequently into general fringe belief. Accounts of Lemuria here differ. All share a common belief that a continent existed in ancient times and sank beneath the ocean as a result of a geological, often cataclysmic, change, such as pole shift, which such theorists anticipate will destroy and transform the modern world.