|Jawbone, with intact teeth. 3 1/2 inches long. On a piece of driftwood bark for contrast.|
This looked, at first glance, like fish bones; flexible bones, very thin, porous. I took it home and Googled "Salmon jaw", and there it was; a long jaw with a line of small teeth behind and large, hooked ones in front. The arrangement varies with the species of salmon; I couldn't pin this one down.
|Biting teeth from inside of jaw|
|Same teeth, outside of jaw. The bone is very porous.|
Mature salmon eat smaller fish and invertebrates. The tooth arrangement seems to work for a quick capture and gulp style, with inward-turned hooks in front.