[Germany, June 16. Image via Getty]

Two swallowtails mate on June 16, 2009 in the biggest butterfly farm in Europe in Trassenheide on the Baltic Sea island Usedom, north-east Germany, where the butterflies are shown in a tropical vegetation in an area of around 2600 square meters . AFP PHOTO DDP/ JENS KOEHLER GERMANY OUT (Photo credit should read JENS KOEHLER/AFP/Getty Images)