Finding the unfindable: BBC films Natural England's dive team on Cornwall's ancient seabed after the discovery of a new seaweed species

The extensive healthy maerl bed in the Fal Estuary, taken by Natural England divers on the day of filming. Credit Angela Gall - Natural England

By Angela Gall - Marine Senior Officer, Devon, Cornwall and Isles of Scilly Area Team Off the south coast of Cornwall, in the cold, clear water, lie some of England's least-known natural treasures: the maerl beds. Earlier this summer, our …