Found one I am sure!
(Fayetteville, AR, USA)
Its cold out and so we ordered red lobster for delivery with Grubhub. I am a strange one and I pick all the meat out and put butter on it and eat it with a fork.
As I was eating toward the end i felt something hard in my bite. I thought I must have missed some shell and took it out and found what looked like a hard pink bean. That prompted me to google if crabs can have pearls in them and found your post.