The link below is to an article that reports on a parasitic eels found in the heart of a shark.
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.
The link below is to an article that takes a look at how a marine biologist survived an encounter with a shark.
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