Sea Leviathan

Sea Leviathan belongs to the Extinct rarity and is currently unobtainable, so what follows is a record of what it was. It lived in Open Ocean, took Shark Head, Truffle Worm and Luminous Larva as bait, and appeared in Winter and Spring. The entry calls it a swift, deadly predator of the fog, elusive and nearly untouchable. It carries the Hunt tag.

Its numbers were huge: 1,918.4 to 12,600 kg, averaging 4,100 kg, which ranks 85th of 663 by maximum weight. At C$3.5 per kg an average specimen was worth C$14,350, 105th of the 742 documented fish, with 15,000 base XP.

Open Ocean's other Extinct fish are Apex Leviathan, Black Swallower, Four Eyes Fish, Pelican Eel, Psychedelic Frogfish and Rock Gunnel, and none of them can be caught now either.

Takeaway: if you are trying to plan a hunt, there is nothing to plan, because it is not available. Treat it as a reference point for how far the top of the table goes, and focus your effort on rarities that are still in the water. If you ever see a specimen in someone's collection, its sale value alone says how rare it is.