The Dredge Abyssal and Hadal fishing rods are unique in that you can't initially unlock them by using Research Parts like any of the other rods, nets, or pots in the game. Instead, you have to complete a very specific pursuit in order to unlock Abyssal fishing so you catch some of the deepest and rarest fish in the game.
If you've already got access to Abyssal fishing, you might want to know where to find a Stoplight Loosejaw for the Researcher, or how to get explosives and Refined Metal to strengthen your hull against nighttime big fish attacks. Either way, here's how to unlock the equipment to catch Abyssal and Hadal fish in Dredge.
