An elderly Metkayina male suspended upside-down in a glowing underwate

An elderly Metkayina male suspended upside-down in a glowing underwater cavern, his neural queue fused with a colossal jellyfish-like entity. Thousands of tiny luminous fish form shifting constellations around them, projecting holographic memories of ancient tsunamis. 8K underwater scene, Avatar 2 lighting techniques with Abyss-like wonder