Translation seminar Blue swimming crabs were collected on a monthly basis October during 2010 - 2011 July from small-scale fishers in three fishing villages: Ban Chang Lang Sikao in District, Ban Nam Rab Kantang in District and Ban Haad Sum Ran in Haad Sum Ran district. Each village used different types of trap.traditional fixed trap A box (30 X 45 X 20 cm) covered with a red polyethylene net with mesh size (M) of 4.3 cm (Figure 2a), was used in Ban Chang Lang, where fishers set an average of 100 traps per day per boat. The second type of trap was a collapsible vertical trap with a diameter of 50cm covered with green polyethylene net with a mesh size of 5.0 cm (Figure 2B) .It was used in Ban Nam Rab,Where fishers set an average of 180 traps per day per boat. The trap was the third type of common collapsible box trap (35 X 50 X 20 cm) covered with green polyethylene net with a mesh size of 3.0 cm (Figure 2C) .It was used in Ban Haad Sum Ran, where fishers set an average of 700 traps per day per boat
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