What’s wrong with this sentence? (In previous sentences in the article quoted from, it is explained the writer is talking about great white sharks.)

“Researchers at OCEARCH, which captured, tagged and released the sharks aboard their 126-foot former Bering Sea crabber have found that the sharks swim south much faster than once thought.”

My mind immediately saw those sharks released on the former crabber. I pictured them flailing around on the deck. Then when I looked at the sentence again, I thought it was too long and complicated. I also realized that the researchers did not capture the sharks while the sharks were aboard their boat. Next I caught on that since it was the researchers who captured, tagged and released the sharks, the word “which” following “Researchers at OCEARCH” is incorrect. “Which” should have been “who.” It was the researchers who captured the sharks, not the organization they work for. Not to mention the missing comma after the word “crabber” and the needed Oxford comma. All problems could have been fixed by taking apart the sentence and rearranging everything so it both made sense and was easier to read. Making it two sentences would have helped immensely.

I do not claim to be an expert on grammar, and I’m only pointing out things that I’m sure were wrong. But if I’m mistaken about any of my points, I wish some of the experts out there would let me know. I know that learning does not end until the moment we die. I’m here to learn.

I’m not sure I’ve ever seen so many errors in one sentence in a newspaper article, but I have to wonder. If you don’t believe me, it was here (unless they since corrected it):

http://www.usatoday.com/story/tech/nation/2013/02/18/shark-researchers-trackers/1927825/?csp=tech

I am so flabbergasted, I am now speechless, a rare event for me.