No, I think the sea lion killed it. A guy I fish around said he had a sea lion charging around in his seine. There was a huge commotion and a sea lion emerged holding an 8 foot salmon shark.  He took it under the net and devoured it on the other side. Same sea lion ripped a hole in the backside of my net and took several fish, then came along side my boat to taunt me.  He has a bit of an attitude