A whale gallstone or whale shit, (Ambergris) is worth a lot of $$$$$$. This is fascinating:
"When a whale initially expels ambergris, it is soft and has a terrible smell. Some marine biologists compare it to dried cow dung. But after floating on the salty ocean for about a decade, the substance hardens and becomes smooth, waxy and usually rounded. The dung smell is gone, replaced by a scent that has been famous for hundreds of years, probably more. The longer it floats, the better the scent."
"The smell is so fine that ambergris is a coveted ingredient for fine
perfumes. In fact, it's described as being smooth, musky, earthy, sweet or simply "indescribable." Aside from its unique odor, ambergris' vital function is helping perfume scent to bind to the surface of the skin and stick around, instead of quickly evaporating."
If you're wandering on the beach and happen upon a large mass of some sort of waxy substance, take a closer look. It could be the rare "floating gold" of the sea: ambergris. Find out whether this whale poop can help you retire rich.
animals.howstuffworks.com