Edit 10/1/2020 Please Note I have responded to some comments claiming we had injured this fish prior to the video, but I'm just going to explain here and be done with it.

We absolutely did not interact with these mahi mahi in any way. We did not catch them and deoxygenate them. We did not spear them. We did not gaff them. The wounds on the mahi mahi are from the false killer whales (Pseudorca crassidens) a species of oceanic dolphin. Mahi mahi are actually the most frequently documented prey of these amazing marine mammals (Baird, 2016, "The Lives of Hawai'i's Dolphins and Whales"). These predators use pack hunting and stamina to wear the incredibly fast mahi mahi down. The fish were indeed trying to use us (and our boat) for cover, but the whales always had the upper hand. An incredible experience that we were absurdly fortunate to witness.

Encounters with various pelagic critters near Kona on the Big Island of Hawaii. Video by Ian Roussopoulos and Tyler Bledsoe.