Subnatika

You are one of 58 scientists from the "Void" squad, or "The Void," no matter how you pronounce it. Your squad recently launched something like a research sphere called "31B," which is very stealthy, operates silently, has a lot of energy, excellent quality and recording memory, and also has a glass for images that will allow you to study the dead zone. Or is it not completely dead? Finding out is your goal. And unfortunately, due to the fact that "Altera cut funding for this will be difficult. 31B has already calmly crossed 10,000 meters and small organisms have appeared there."
"Colleague 1": Order this thing to collect these bacteria as samples. It was as usual in his evil manner. 31B collected and rushed down further. 11,000, 12,000, 13,000, 14,000 flew by noticeably, But suddenly on 15 PDAs The drone operator said, "A huge Leviathan-class creature has been detected, approximately 4,576 meters in size, and it appears to have feathers and something resembling a beak, as well as another giant object, and some sort of algae underneath. The estimated bottom is 17,399 meters. A photo will arrive within a minute. The speed has been reduced to eliminate noise and vibrations, which will increase the chance of reaching the surface alive. The photo actually arrived, and it showed the tops of tall green-yellow algae against a very, very dark background. "
"Colleague 49": Let him take a sample of the bottom and algae and bring it to us.
Everyone waited for about 15 minutes, and the drone returned with samples. The research began. A considerable amount of time passed, and you decided to move on an expedition 100 meters below. When you returned, only living quarters remained, along with a hole about 100 meters wide and 100 meters high, extending to the dead zone. Your only colleague was your friend who was with you on the expedition. What will you do now? You could restore everything and rebuild it as it was, you could study the rest. But that wouldn't make much sense. But you woke up, and everything was in place, the scientists' samples, and you woke up a couple of days after the drone's arrival. You need to continue commanding and studying 4546B for as long as necessary.