Control methods are generally practiced on lease areas and therefore are
not successful at decreasing sea star densities in areas outside a lease. Sea
stars will reinvade cleared areas and therefore continual efforts of removal are
required. While the mop seems to offer the most efficient sea star control
method for bottom culture, the significant initial investment required and its
adaptation to open water conditions need to be considered. The dredge
presents the unique advantage of being able to concomitantly remove sea stars
during regular fishing activities and should be encouraged. Meanwhile, this
method may target species of sea stars that are not of concern to shellfish
culture. Some methods, such as the dredge, sea star traps and hand-picking do
not destroy the sea stars and therefore allow for their use after collection.
Although there are many potential uses for sea stars, none show any financial advantage. In the case of off bottom culture and oyster bottom culture, the benefits of increased harvest yield clearly warrant the cost of control measures.