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MARINE FOOD PRODUCTION starts With the plankton where plants such
as diatoms (above, left) capture the sun’s energy by photosynthesis
and in turn provide food for small animals such as copepods (above,
right). Both diatoms and copepods are eaten by sh which are
caught by man. Another possible source of human food is the krill
(below) large numbers of which shoal in the southern polar seas
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