Left the harbor about 0545. Set lines with an ono spread as we passed Kepuhi and ran the ledge. Had some promising marks on the sounder in several places, but no action. Passed V on a following sea and shifted out lures. While doing this had about a dozen Sooty Terns overfly us heading southwest. We continued on a following sea and saw a few birds out ahead. As we approached a couple of boats heading to the north, the port outrigger came down and we boated a 120# marlin. While gutting the marlin I cut my right thumb. We got the bleeding under control and reset lines headed toward the pinnacles. As we approached we saw several boats and some birds. My thumb started to bleed again. We got fresh bandages on it and decided to make it an early day. We could see a number of boats outside the 1000 off Nanakuli as we headed in. As we passed the 500 fathom curve inbound between S and R we saw several large splashes ahead of us. It wasn't mammals but had to be pretty good sized. We made a couple of circles in the area with no action and it was time to head in. When I removed the bandages at home, the bleeding resumed and I went to the ER to get stitched up. The boat ran great and we'll be back on the water soon - after re-stocking the first aid kit.