Katkeeper sends along this item which was highlighted in a
NY Times story. What the lady there is holding is, apparently, ambergris -- a waxy substance whales will occasionally puke up or crap out, or which is found in their gut when they're killed.
Ms. Ferreira, shown above, was given this chunk by her sister. They are not sure that it is actually Ambergris. If it is, the blob will be worth $18,000, the story suggests. It's valuable because it's used in some of the most expensive product on the earth by weight: perfume. Apparently it can "fix" the scent of a perfume, allowing it to linger longer instead of evaporating.
Scientists think whales produce this stuff when they swallow sharp objects. They coat the objects with it so their insides aren't hurt. Like grit to an oyster's pearl, I suppose.