Experts say fishing methods are to blame, with one subspecies in New Zealand down to fewer than 100 mammals. Hector's dolphins are found only in New Zealand where the population has fallen to 7,000.

New figures show 26% of all sharks, rays and related species in the north-east Atlantic are threatened with extinction. Seven per cent are classed as critically endangered, while a fifth are regarded as near-threatened.

The growing appetite for seafood among Chinese consumers, growth rate of 6 percent p/yr between 1990 and 2010, accounts for 34 percent of all fish consumed every year. By 2030 Chinese consumption is expected to grow by another 30 percent.

Ecuador's navy confirmed a large Chinese fishing fleet of roughly 300 vessels is moving away from the Galapagos Islands and is now operating in international waters off Peru. Blow them out of the water?

Fishing nets are killing our oceans. If nothing is done, there won't be anything left.