Renate Kvernberg and Karstein Hårsaker from the NTNU University Museum collect zooplankton in Jonsvatnet, a large lake in Trondheim. Photo: Per Gätzschmann, NTNU University Museum
Renate Kvernberg and Karstein Hårsaker from the NTNU University Museum collect zooplankton in Jonsvatnet, a large lake in Trondheim.