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Figure 7. The most typical composition of bluefin tuna schools during the spawning season in the 1980s. A:
cone-shaped formation; B: scale formation; C: caravan formation, having most of the individual spawning at the
surface. p: pilot specimens. (Arena, 1982).
Figure 8. Main migratory courses of the bluefin tuna inside the western and central Mediterranean Sea during
the spawning season, including pre- and post spawning movements known till the ‘80s. (Sarà, 1983).
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