I’ve seen many of my tuna and others’ come back looking like that or just the tuna’s head.
More often it’s sea lions while tuna fishing out of San Diego. It’s very frustrating if the fishing is slow and they float on the surface out of paintball range eating your fish
Did you see what species? So. Cal and down into Mexican waters it’s most often mako or blue sharks.
He got slammed half way up the water column, but a big black tip was landed a bit later so I suspect it was him. Someone on the stern pulled up a 28lb snapper, the biggest one landed on the boat. It was a good haul of fish, in the end I got 4 reds, 1 gag, 4 yellowtails, 8 mangos, 2 vermillions, 1 porgy, and countless Almaco jacks.