Having unexpectedly recovered after 70 years of cryopreservation precipitated by the heating arrangements in the bedrooms of 13, Norham Gardens, Oxford, where he was Regius Professor of Medicine, Sir William Osler recently visited the current Regius Professor to take tea with him in the Master’s Garden at the Almshouses of Ewelme. Excerpts from the tea-time conversation between the “Regii” follow.

Aquaculture is the fastest growing food-producing sector, accounting almost 50% of the world food fish demand. Considering the projected population growth over the next two decades, it is estimated that at least an additional 40 million tonnes of aquatic food will be required by 2030 to maintain the current per capita consumption (NACA/FAO, 2001). Marine aquaculture production was 30.2 million ...