Moon the humpback whale completes 5,000km journey – with a broken back

Moon's severe injury, likely the result of a boat strike, is stark reminder of growing dangers for whales along Canada's west coast

Over the course of nearly three months, navigating ocean swells and currents, vast expanses of flat water and immense pain, Moon the humpback whale completed a journey of 5,000km (3,100 miles) from the waters of British Columbia to Hawaii - all with a broken back.

Her crossing of the Pacific - and the likelihood that she will soon die - is a stark reminder of the growing dangers for whales along Canada's west coast, as marine traffic clashes with the gentle marine giants.