The most expensive thing on the whale is excrement, which is ambergris. One gram of ambergris from whale vomit can be purchased for 500 yuan.

Ambergris, a precious spice with a domineering name, is actually derived from the intestinal stones of sperm whales. Sperm whales love to eat squid, but they cannot digest the squid sheath. The hard inner shell will get stuck in the intestines, so the sperm whale secretes a substance to wrap the inner shell. This mass of substance is pathologically called a stone. This mass of material has only a 1% chance of finding a suitable location in the sperm whale's body and gradually grows in size. This enlarged substance was the prototype of ambergris.