Fishing for clues; can we help the Marlin slip the hook? (includes related article on marlin identification)

Scientists working with longline fishers have been able to trace the migration patterns of black marlins and develop guidelines for tuna fishers to reduce the marlin mortality rate. By reducing the length of fishing sets and sinking hooks to greater depths, fishermen are able to increase their tuna catch and decrease the number of marlin. While there is no evidence black marlins are an endangered species, their status is undetermined.

Black marlin are charismatic creatures. They grow to four metres and 600 kilograms and are thought to reach speeds of 100 kilometres an hour. Individual ...

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