Sad way for the oldest known vertebrate to die. My coworker saw the headline about the 400-year-old shark and asked me how could they know the age? Me, not being a marine biologist, had no idea. I thought, well, if you’re really interested, go find out. I was busy working, as I usually am at work, but she was spending time on her phone, which she is want to do at work. So, I’m thinking, maybe she was in a better position to find the answer to that question. It was a good question, and I meant to look for the answer later, but I had forgotten till I saw Nittany’s post. Thanks, Nittany, now I know. But, I won’t bring it up to my coworker, because she’ll have follow-up questions, and, again, I’m not a marine biologist.