Sonic Topologies of Silence: A Quantum Bioacoustic Framework for Information Encoding in Abyssal Piezophiles

In the extreme conditions of the hadal zone, where pressures exceed 1,100 atm, temperatures near freezing, and darkness is perpetual, conventional models attribute piezophile survival to metabolic and genetic adaptations. This study introduces a paradigm-shifting hypothesis: deep-sea piezophiles utilize quantum-coherent acoustic vibrations within pressurized protein-hydration lattices to encode, process, and transmit biological information, a mechanism we term Topological Bioacoustic Memory (TBM). Using density functional perturbation theory (DFPT) and molecular dynamics (MD) simulations, we demonstrate that outer membrane proteins in Moritella yayanosii, modeled on mechanosensitive channel homologs like MscL, form phononic topological insulators at 100 MPa. These insulators host protected acoustic edge modes that sustain quantum vibrational states (>100 ps), encoding epigenetic-like information via frequency-phase modulation, independent of DNA. We propose the Xenobiological Acoustic Alphabet (XAA), a 16-symbol code based on phonon harmonics, achieving error-corrected data storage densities exceeding 10^18 bits/cm³. The coherence paradox is resolved by showing that high pressure suppresses thermal phonon density of states below the vibrational gap, while piezoelectric feedback from membrane lipids enables continuous error correction. Quantum mechanics/molecular mechanics (QM/MM) simulations elucidate the molecular I/O mechanism: XAA symbols are written by mechanosensitive ion channels and read by allosteric enzymes through vibronic coupling. TBM erasure upon decompression explains piezophile culturing challenges. This framework establishes bioacoustics as a quantum-enabled information layer in biology, with transformative implications for astrobiology, quantum memory design, and the search for extraterrestrial life.