A Clear Walkthrough — Unlocking Enhanced Fins in Subnautica 2

In the vast underwater world of Subnautica 2, enhancing your mobility is key to survival and discovery. The improved fins offer a significant boost to swim speed, enabling quicker journeys, more efficient resource gathering, and safer encounters with aquatic life. This essential upgrade can be unlocked by locating and scanning specific fragments, followed by gathering the necessary components for crafting. Expediting this process will greatly benefit your early game progression and overall exploration experience.

To begin your quest for enhanced propulsion, your first destination should be the Alien Ruins, situated to the far east of your Lifepod. A signal for these ruins becomes active after you've investigated the Tadpole Pens. Before venturing out, it's highly recommended to activate all landmark signals in your character menu. This will ensure you can easily pinpoint crucial locations within the Alien Ruins area. Within this region, you need to find and scan three distinct sets of improved fins to unlock their schematic. While multiple sets are scattered across the zone, this guide will focus on the three most accessible locations relative to the Alien Ruins signal, allowing for a streamlined acquisition process.

The initial set of improved fins is conveniently located directly adjacent to the Alien Ruins. Simply dive a few meters southward from the ruins, and you'll spot them resting on a lower geological formation. Once you've successfully scanned these, proceed approximately 230 meters east-southeast. Keep an eye out for a prominent pioneer platform situated on a towering rock structure; the second pair of improved fins awaits you there. For the third and final scan, descend to a depth of 260 meters from your current position and gaze towards the southeast. You'll observe a distinctive blue light across a chasm. The last improved fins can be found within an open crate positioned next to this light source. A word of caution for this final step: if your tadpole submarine isn't yet equipped with the first depth module, park it at the 250-meter mark to prevent damage, and then swim the remaining distance to retrieve the fins.

Upon successfully scanning all three improved fin fragments, the blueprint for crafting them will become available at your fabricator. The crafting requirements are as follows: one basic fins, one fiber mesh, and two conduit crystals. You likely already possess basic fins; if not, they require two rubber (derived from four lucifer rotsac) and two fiber (from four fibrous pulp). Ensure you collect extra fibrous pulp for the fiber mesh, which also requires two fiber and one strong acid. Crafting strong acid requires a processor, and while near the Alien Ruins, it's often more straightforward to use gold and sulfur, both abundant in the large lava cave beneath the ruins, rather than necrolei cysts. The most challenging component to acquire is conduit crystal. These rare materials occasionally spawn on the seabed around the blue glowing pillars near the Angel Comb, located east of the Alien Ruins signal.

Mastering underwater movement in Subnautica 2 is crucial for efficient exploration and material collection. By diligently following these steps to unlock and craft the improved fins, players can significantly enhance their underwater capabilities, making the vast ocean less daunting and more accessible for further discovery. This upgrade not only boosts speed but also contributes to a more secure and productive journey through the game's captivating aquatic environments.