The reality is that we do have some indication of the relationship between the relative consumption of cod, shrimp, crab, and so on and so forth. However, the Newfoundland ecosystem is actually more complex than we like to think about it, and it's not dominated by cod in the same way as it was in the 1980s and earlier periods.
In fact, we're seeing a number of species preying on shrimp in reasonable numbers. They include Greenland halibut, redfish in particular, and American plaice, which seem to be eating fairly substantial amounts of shrimp. This is part of the sort of natural cycle of productivity that we see in that area. Remember as well, we do have a lot of seals and seals do eat shrimp as well.