Countryfile: Hamza's Highlands - Cromarty Dolphins

At the edge of the Moray Firth, a former lighthouse is now a beacon for dolphin discovery. Hamza Yassin heads to the Cromarty Lighthouse Field Station, where scientists are tracking Scotland’s resident bottlenose dolphins in the UK’s longest-running study of its kind. As our seas face change, the findings are helping to build a picture of the wider health of our marine ecosystems.

There’s also a look back through the Countryfile archives, shining a light on others around the UK dedicating their lives to wildlife and conservation.