The team focuses on the Irish Sea and its surrounding land, with Nick Crane finding out about a unique seasonal phenomenon of this sea - a current called `the gyre' which provides the perfect environment for Dublin Bay prawns to flourish.

Mark Horton explores the archaeological discovery of two Roman temples and an early Christian church in Maryport, across the water from Dublin, and
Tessa Dunlop reveals how one small yacht changed the course of British and Irish history.

Cassie Newland and Miranda Krestovnikoff tell the tale of RMS Tayleur, a ship that sank on its maiden voyage with a great loss of life,
and singer Ruth Keggin tells the story of the Irish Sea god Mannanan.