This video is called Breeding Southern Right Whales – Attenborough – Life of Mammals.
From the New Zealand Herald:
Rare right whale spotted in Auckland harbour
6:48 PM Tuesday Aug 21, 2012
AUT University Marine Researcher Emma Beatson says the whales are a nationally endangered species and heavily exploited by whalers.
She says they’re slowly recovering, but not a lot is known about them.
Ms Beatson says they generally breed around Auckland Islands at this time of year, but it’s very rare to see one coming into shallow waters to calve.