First broadcast: on BBC One LondonLatest broadcast: on BBC Two Northern Ireland
The final programme comes from St Abbs in Scotland and looks at whether herring are making a comeback, and there's exploration into the lesser-known British coral reefs. Show more
First broadcast: on BBC One LondonLatest broadcast: on BBC Two Wales HD
Steve uncovers the historic secrets of seabirds in Yorkshire, Gillian finds out how we're stressing our sea creatures, and Chris meets a retired couple adding to shark science. Show more
First broadcast: on BBC One HDLatest broadcast: on BBC Two Northern Ireland HD
Steve reveals how ocean plastic rubbish is turned into kayaks that clean up our seas, Gillian goes oyster fishing in Cornwall and Chris meets author Philip Hoare. Show more
First broadcast: on BBC One LondonLatest broadcast: on BBC Two Northern Ireland HD
Steve finds out how washing our clothes is harming our marine life. Why has the fish and chips supper changed? And which lobster is making a comeback? Show more