Sure, I suppose it's possible that a whale could swallow a sailfish, perhaps, depending on the size of the sailfish and how it goes down. A whale could easily get one in its mouth that's for sure. ...

Sailfish are pretty fast, but you never know. That would be cool to see though!

Yellowfin aren't the only thing that's been hammered by purse seiners.
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Missed this the first time around, but well worth the read. Yes, that does look like it could be a Bryde's whale but w/o seeing the head I can't be 100%. Nice spinners too; did you drag any tuna...