1.   It is true that wolves, working in packs, are probably the most efficient big predators in North America.

2.   The big offshore predators were simply out of reach.

3.   The highest levels in the Register testing were linked to the consumption of the big predator fish such as amberjack, cobia, mackerel and redfish.

4.   This leads to fish gridlock, and to seas marked with dark rafts of massed baitfish that run red when the big predators go on the feed.

5.   Wolves also must deal with competition from other big predators.