UK’s first sustainable European oysters go on sale

Certified native oysters, prized for their fuller flavour, will be sold at branches of Whole Foods Market

Tuna and mackerel populations suffer catastrophic 74% decline, research shows

WWF says we risk losing species critical to human food security unless action is taken to halt overfishing and other threats to marine life

Can sushi ever be sustainable?

With many fish stocks in decline, the ethics of ‘sushinomics’ are seriously dubious

Oceans are world’s seventh largest economy worth $24tn, says WWF report

Vast economic worth of world’s oceans includes fishing, tourism and shipping but is declining due to pollution, climate change and overfishing

Luxury hunting and fishing estates hit record high price

Demand for exclusive properties and grounds for stalking deer or fishing for salmon has soared, says study by estate agents

Unique underwater world discovered in Pitcairn Islands

Expedition reveals 80 new species of fish, coral and algae in the pristine waters of British overseas territory in the Pacific Ocean