You may have better luck speaking with someone in the perfume industry rather than on a food board. Johnnyboy's essentially right - it's waxy goo that sperm whales regurgitate though smaller lumps go the intestinal route.
I've been to Ambergris Key in Belize, looked for whale shit on the beaches, but alas, there was none. BTW, the Belizeans pronounce it differently than I did before the trip, they say am-BURR-giss. Never seen or heard about it in Montreal.