The following link is to an article on what may at first appearance seem not a major issue. However, upon further consideration, the surge of smaller fish populations around the world due to a decline in larger predator fish species and sharks has growing complications for our oceans.
For more visit:
http://www.bemoreeco.com/2011/03/05/how-the-demise-of-the-shark-has-led-to-our-oceans-becoming-packed-with-sardines/
Kevin's Walk on the Wild Side 