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This story is mainly directed to 6+ years old children and it is composed of 11 illustrations; each constitutes 2 pages (22 pages in total). This story is different from other children's educational stories because it is very simple and straightforward in describing the importance of the marine food chain from base (phytoplankton and zooplankton) to the top (large fish and mammals). The story sheds light on the importance of the base and how its elimination or heavy decline, would mean no f...