This is just another example of the arrogance of man, trying to solve complex natural balance issues, that have been interfered with by man. Remove the main food item, and an animal will adapt, in this case small prey fish like Mackerel or Herring. The nett result is that the seals will seek alternative prey species rather than die - and what easier solution than some nets that have already trapped those tasty treats!!!!!
We have seen the same problem down here, where man displaced the desert Lions, and allowed the Cape Fur Seals to use just about any beach to breed on, and raise their young, as well as infinite protection from the 'Greens'. Rather than the former situation where the seals were restricted to rocky outcrops and small islands for breeding. The population exploded 10 fold or more, with a rough estimate of 1.5 million seals on this coast. Add in a little over- exploitation of their main food source - Sardines/Pilchards, and seals now become a serious problem feasting on other prey species, and causing stock problems.
Then the ultimate problem comes, when with all this huge stock of seals, starts breeding with a vengeance, but they is too little food for the stock of seals, and now nature makes another turn in its survival strategy - the young on the beach are abandoned, and inevitable starve to death and the coast for hundreds of miles is littered with dead seal pup corpses. Next round of 'Green Screaming', happens, the young seals need feeding and saving!!!!
Man is really not intelligent enough to interfere with natural balance schemes...…………..
See what happens if the Irish seals are subject to a cull, the 'Greens' will go absolutely mad, and Ireland will be subject to the full level of their wrath!!!!
For those that remember the actual start of the huge Cormorant problem - a sea bird feasting in inland lakes, brought about by overfishing Herring and Sandeel. Still not resolved!!!! And yet, we see huge flocks - in their thousands along our coast, feeding and surviving naturally - feeding on small sea fish species.