Good many years ago, DH went overnight tuna fishing and brought home 4 or 5 (I think) 35~55lb tuna... whole.
They had been bled and gutted on the boat, but It took him all evening/late into night to butcher them, using the picnic table as his work surface. I spent the evening trotting trays and trays of cuts into the house and packing them.
He buried the carcass where the tomatoes had grown (the garden season had just passed). He rinsed out and left the empty metal trashcan he used to hold the trash bags and newspapers and paper towels, etc. by the back fence. Next morning, he found an opossum trapped in the bottom of the can.
We had bountiful harvest from the garden next year. But I was finding giant spinebones and other bony parts of the tuna for many years thereafter.