Volunteers who survey shark eggs in Morecambe Bay counted nearly 18,000 egg cases last year.
Lancashire Wildlife Trust’s The Bay Group have earned a national award for the findings, being recognised at the Marsh Volunteer Awards for Marine Conservation.
The volunteers search for old egg cases on the shoreline, take photographs of them, and upload them to the Shark Trust’s website.
Alan Wright from Lancashire Wildlife Trust said: “I don’t think people realise what we’ve got in the Irish Sea. We’ve got things like dolphins, porpoises, giant basking sharks, humpback whales.”