Coast

The team journey around the great estuaries of Britain where 20 million people live, and a dazzling variety of animals thrive. Nick Crane explores the wealth of wildlife and industry that are attracted to the Firth of Forth, the mighty estuary that feeds Edinburgh, and must answer a deceptively tricky question - why is the sea salty?

Category

Documentary / Environment / History / Nature / Performing arts / Travel

Original air date

2013-04-24