In order to evaluate the evolution of catching efficiency over
time, three control nets with the same characteristics as the experimental nets were set in each bottom type and in the vicinity of the
experimental nets. These control nets were deployed 24 h prior to
each diving survey of the “lost gear”. Only fish judged to have been
caught in the experimental nets during the past 24 h, i.e. either aliveor dead but in good condition (stages 1 and 2), were used to evaluate
the lost nets’ catching efficiency over time.
The fishing area of each net was estimated as: