Penis fencing

No, not the kind of fencing used to protect our gardens, though that's an interesting thought, but the sparring kind. This photograph, which shows two Right Whales engaged in the activity, comes from an exhibition dedicated to homosexuality among animals, organised by the Natural History Museum of the University of Oslo. According to the information on the site:

The exhibit displays a small selection of the more than 1500 species where homosexuality has been observed. This fascinating story of the animals' secret life is told by means of models, photos, texts and specimens. The visitor will be confronted with all sorts of creatures from tiny insects to enormous sperm whales.

In other words, there's something for everyone: the idea of models is particularly intriguing. The exhibition, which ends in August, is entitled Against Nature?

The answer, not surprisingly, is no.