Blue Planet UK S01E05 - Episode 5

In the final programme looking at the UK's Blue Planet, Gillian Burke investigates whether being a brave crab is a disastrous strategy and Steve Brown will be finding out if herring - the 'silver darlings of the sea' - are making a comeback this year. One man shares his passion for sea horses. Plus the programme will explore the lesser-known British coral reefs and a reflection on life as a lighthouse keeper.