Last updated at 12:49 GMT, Thursday, 29 November 2012

Invisible island

Sandy Island as it appears on a map

The island that never existed

Sandy Island appeared on maps as a piece of land between Australia and New Caledonia in the South Pacific. But when scientists from the University of Sydney went to the area, they found only the blue ocean of the Coral Sea.

Alice and Neil try to find out more.

Today's question:

What's the name of the legendary island which is said to have sunk into the sea? Is it:

a) Pacifica

b) Atlantis

c) Oceana

Listen out for the answer at the end of the programme.

Listen

Invisible island

End of Section

Vocabulary

reading maps

understanding and finding your way using a map

navigator

person who plots the journey or location

expedition

research trip

suspicious

not trusting or believing

human error

mistake made by a person

nautical

related to the sea or oceans

variety of sources

selection of reference material