Multiple guides describe how to investigate the Tadpole Pens area in Subnautica 2. The walkthroughs instruct players to find Zip’s black box, which is located in the Hot Caves region. Once the black box is located, players obtain the door key code needed to access the Tadpole Pens. The guides focus on the path and location details for reaching the black box and then using the retrieved code to unlock the door at the Tadpole Pens. While both sources align on the overall goal and key requirement—retrieving the code from Zip’s black box in the Hot Caves—their presentations vary slightly in wording and emphasis. Overall, the instructions are straightforward: locate Zip’s black box in Hot Caves, record or use the key code provided, and then enter the Tadpole Pens using that code. The content is written as a player-focused walkthrough rather than a news report, aiming to help users progress through this specific in-game investigation.