They swim in what?
German police students heard how Buxton officers have dealt with the headache of the town’s infamous ‘Blue Lagoon’ when they visited the area this week.
The group are all student police officers and were in town to learn more about British policing.
They spent time at Buxton police station on Tuesday as well as learning about the problems at the Blue Lagoon and paying a visit to the site.
The disused quarry in Harpur Hill has become a bizarre tourist attraction as people from across the country flock to swim in the water which looks like it belongs to a top Mediterranean beach but is actually only blue because of chemical pollution.
And they leave locals speechless by keeping on coming despite being told it is full of dead animals, excrement and car wrecks.
Police have been working with councillors and local residents for several months to try and solve the problems associated with the Blue Lagoon.
Last month, a petition containing more than 760 signatures, calling for a solution to the issues at the site, was presented to borough and county councillors.
A member of the National Policing Improvement Agency also attended the station to speak to the students.