Image sources:
1. Image © Kristin Gründler - Fotolia
2. Image © Ocean-Image.net - Fotolia
3. Image © stockyimages - Fotolia
4. Image © anetlanda - Fotolia
5. Image © JackF - Fotolia
6. Image © blackday - Fotolia
7. Image © tatchaihot - Fotolia
8. Image © sakkmesterke - Fotolia
9. Image © timsaxonphoto - Fotolia
10. Image © Africa Studio - Fotolia
11. Image © ra2 studio - Fotolia
12. Image © Wisky - Fotolia
13. Image © vladimirfloyd - Fotolia
14. Image © rdrgraphe - Fotolia
15. Image © Christian Schwier - Fotolia