08.13.2018 - By BBC World Service
Lesley Curwen has sailed thousands of miles around Europe on her yacht and knows the strange joy of being out of sight of land.
Talking to fellow sea-lovers - sailors, a marine biologist, an artist and a Captain of a merchant ship - she asks why we are drawn to go to sea and put ourselves at the mercy of wind and waves. Is it a yearning to be close to nature, a test of self-reliance or can science explain why our brains are attracted to the ocean? Photo: The sea. Copyright Shutterstock