5/6 Nick Crane leads the team around Britain in a search for the secrets revealed by the tide.
6/6 Coast visits Sweden and explores the British connections to this stunning shoreline.
2/4 Chris Packham reveals how the world's spectacular grasslands flourish. (R)
1/3 Monty Halls examines the complex structure of the Australian coral reef and its wildlife. (R)
BBC Two Scotland only
3/6 A toirt sùil air an ceangal a th' aig dha sgiobair aiseig ris a mhuir. Two ferry captains. (R)
1/3 How an entrepreneur tried to build a giant zip-wire ride on a Lake District mountain. (R)
Addiction expert John Marsden explores our relationship with alcohol. (R)
Tuesday 25 September 2012