I understand that answer. DFO has the mandate for conservation of fish, shellfish and marine mammals. However, “healthy” is a subjective term. If we're talking about the crab stocks, I think we want them at the highest possible level so we can maximize the return.
The other mantra of DFO today is “ecosystem-based fisheries management”. We cannot have an ecosystem-based fisheries management if we have top predators in the ecosystem eating potentially up to 13 million tonnes of fish.
I think they have a mandate to keep the various species of seal at a healthy level, but not at a level that's causing very serious negative impact on other stocks.