Researchers from Cal State University Long Beach have discovered alarmingly high levels of the chemicals DDT and polychlorinated biphenyl in juvenile white sharks off the coast of Southern California. Though the chemicals are toxic, they appear to be having little effect on the young sharks. If you have a minute, swing by and read through their study. It's extremely interesting.
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0062886
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