[Pete from Shawnee Mission]

Ys. Here is a picture of ambergris. So no, not ambergris. There are different colors. More pictures at the link.

AmbergrisConnect how to identify ambergris

After WWI thousands of tons of munitions were dumped in the north sea off of Germany. Some of the phosphorous shells have been degrading and the phosphorus has been washing ashore. People find it in the surf and thinking it is valuable ambergris, pick it up and it ignites and they get burned.

[Yardstick]

Interesting — thanks