Britain's Secret Seas Episode guide
The Bustling South
4/4 As one of the world's busiest shipping lanes, our southern seas are littered with wrecks.
First broadcast: 29 May 2011
The Power of the East
3/4 A look at the rapidly changing environment of the waters of the UK's eastern coastline.
First broadcast: 22 May 2011
The Wild North
2/4 The team travel to Bass Rock, one of the largest gannet colonies in the world.
First broadcast: 15 May 2011
- Next Saturday 17:00 BBC HD
Giants of the West
1/4 An encounter with Britain's largest fish, the basking shark, and giant spiny spider crabs.
First broadcast: 08 May 2011
