Open Water

Iolo Williams recalls the best marine stories from the seas off Wales.

A young tropical turtle stranded in north Wales needs dedicated care from Anglesey Sea Zoo, while Chris Packham reveals the delicate and curious lives of moon jellyfish.

Iolo recalls his own visit to help the gannets of Grassholm Island with the challenges of plastic and more recently bird flu, but black-eyed flu survivors are helping the colony begin a slow fight back.

Gillian Burke joins a sea mammal survey and takes a closer look at the bottlenose dolphins of Cardigan Bay, while Iolo reports a new sighting of a minke whale there, too - the first in ten years.