Human insights into the lives of wild animals. This documentary follows Paul Spong and Helena Symonds as they study the lives and behaviour of a group of killer whales around Johnstone Straight, off Vancouver Island in Canada. Plus a look at the work of Paul and Grace Yoxon , who have devoted themselves to analysing and protecting the otters on the island of Skye, and Argentinian biologist Claudio Sillero, who has been trying to save the Ethiopian wolf since an outbreak of rabies in almost wiped out the species.