-Superswarms are made up of juvenile krill. Adults form smaller, less dense swarms.
-Superswarms are more likely to form when there is less food.
-Superswarms are more likely to form at night.
The researchers posit that because juveniles need to eat less, the protective benefits of swarming with billions of other krill outweigh the negatives of having more competition for food. More urgently, however, the research points to the need to manage krill fishing cautiously. If most krill are concentrated in just a few swarms, fishing from the largest swarms could have a greater impact on krill populations and krill predators than previously thought - even if catches aren't a large proportion of the estimated overall population. ASOC has been encouraging CCAMLR to subdivide the krill catch among several geographic areas to ensure that harvests are evenly distributed. Hopefully this study will provide more momentum for that effort!