 Catches vary greatly from year to year; from 2001 to 2003, for example, the total annual catch totalled 1182 tons, 195 tons and 5840 tons (whole weight) respectively.This variability is apparently related to the strength of the Leeuwin Current, as strong current is correlated with low scallop recruitment.The total value of the fishery in 2003 was A$19.6 million, although this figure includes a small prawn fishery operating out of Port Gregory.