Global Warming
The link below is to an article that reports on a parasitic eels found in the heart of a shark.
For more visit:
http://deepseanews.com/2013/10/ill-see-your-horrifying-crab-barnacle-and-raise-you-a-heart-eel/
I guess it was only a matter if time before our meddling with the earth via fracking became a major problem, or perhaps better put, a bigger problem. Man-made earthquakes are now a reality, but this article suggests they have been around a lot longer than fracking.
For more visit:
http://www.geek.com/science/man-made-earthquakes-are-becoming-a-real-problem-1576464/
The link below is to an article that takes a look at how a marine biologist survived an encounter with a shark.
For more visit:
http://discovermagazine.com/2013/nov/06-punched-shark