Subnautica: Below Zero received its full release on May 14, 2021, and followed the same core concept of its predecessor by stranding players on the alien planet 4546B. Another key similarity to the original Subnautica is how there is very little hand-holding, as players are free to journey through the game's main campaign in almost any way that they choose, with minimal guidance as to where to go and what to do.

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This level of freedom drives home the feeling that the player is truly stranded on a planet that they know very little about, though it does make completing some of the game's quests tricky without a guide. One such quest is to find the Frozen Leviathan and cure its Kharaa, which will complete the quest line relating to the protagonist's sister Sam Ayou and earn the player one of the game's 13 achievements.

Where And How To Obtain The Kharaa Antidote

Robin holding a Spy Pengling

Curing an enormous frozen Leviathan of a disease that the player knows almost nothing about may sound like a brutally difficult task, though if the player knows what they're doing, it predominantly consists of simply finding two locations. However, Subnautica: Below Zero doesn't feature an in-game map, so locating each point is easier said than done.

Before the player starts looking, they first need to construct a Spy Pengling, and a Spy Pengling Remote as Robin's sister Sam hid the Kharra Antidote in a small cave.

How To Construct A Spy Pengling

To construct a Spy Pengling, players need to combine the following items at a Fabricator: 2x Titanium, 1x Silicone Rubber, 1x Wiring Kit, and 1x Battery.

To construct a Spy Pengling Remote, the player must combine the following items at a Fabricator: 1x Titanium and 1x Copper Wire.

Where To Find The Kharaa Antidote

The Kharaa Antidote is located in the Basin portion of the Glacial Basin; for PC players using coordinates, it is located at -1305, 6, -1141.

For console players or those choosing not to use coordinates, go to the entrance of the Phi Robotics Center. Then, head down the icy valley to its west side before reaching a Snow Stalker nest; head up the looping hill and continue along the snowy path until reaching a spacious area with a few more Snow Stalkers. The cave is located in this area, inside of the cave pictured below:

arrow poiting to the cave containing the Kharaa antidote

If players lose their Kharaa Antidote, it is possible to craft a new one. Obtaining the antidote will unlock its recipe, which consists of combing 1x Frost Vase Plant and 1x Fevered Pepper at a Fabricator.

Where To Find The Frozen Leviathan

The Frozen Leviathan

Finding a research center containing an enormous Frozen Leviathan may sound like a piece of cake, though like many things in Subnautica: Below Zero, it's only easy for players who know where they're looking.

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Thankfully, the Leviathan isn't too far away from the Kharaa Antidote, as it's also in the Glacial Basin. The Leviathan is located in the Phi Excavation Site (not to be confused with the aforementioned Phi Robotics Center) at coordinates -1619 29 -763.

To find the Phi Excavation Site, head to the northwest portion of the Glacial Basin until reaching the Glacial Forest, and then again head northwest until reaching a narrow pathway highlighted by lightsticks that leads straight to the site containing the Leviathan. The cave's entrance is pictured below:

arrow pointing to cave leading to Frozen Leviathan

Once there, simply take the elevator up to the Leviathan's head, and insert the Kharaa Antidote into the nearby injection machine, completing the quest.

NEXT: Most Breathtaking Locations Subnautica: Below Zero