underwater scene, Subnautica Below Zero, lithium deposits, purple crystal-like structures, seabed, rocky outcrops, thermal vents, bioluminescent flora, sea creatures, diver with scanner tool, exploring, resource gathering, icy waters, kelp forest, cave systems, ambient lighting, first-person perspective, detailed environment textures, survival game elements, cold ocean biome, 3D composition, realistic water effects, soft shadows, high-resolution textures.