The remarkable recovery of the Atlantic haddock (Melanogrammus aeglefinus), a commercial fish species once in serious decline from over fishing, is described with reference to an article in The Scientist (July 1, 2009) and a discussion of the theorized causes for this fish species’ rebound. Quote from the post:
The decline of commercially valuable ground fish stocks is symptomatic of the global, over-fishing crisis. Perhaps no other region on the globe is more indicative of this crisis than New England [...]
By Meg Hamill •
October 7, 2008
Hundreds of penguins have been jet-lifted to their native home in the Southern Atlantic Ocean, after washing up lost and tired on the beaches of Northern Brazil.

At least 1,000 penguins this year to date, have washed up on Brazilian beaches. Though it is normal for penguins to travel North from their South Atlantic home in search of food, it is rare that they swim all the way to northern states of Brazil, and authorities are amazed that the penguins just keep coming.
Some experts have offered that because the migration of penguins is closely related to their food supply, this unusual journey suggests that something has gone awry with their normal fish stocks.