From the most expensive fish in the world to the superpowers of Posidonia: a handful of figures to see the oceanic dimensions of the sea that feeds us

AI Briefing

• – The blue economy is worth around $2.5 trillion annually, with 15% of global GDP related to fisheries and aquaculture.
• – The Mediterranean Sea is home to the largest fish market, with the bluefin tuna fetching up to $2.2 million per kilogram.
• – Posidonia oceanica, a type of underwater meadow, can produce up to 10 times more oxygen than an equivalent area of forest.