Multiple scientific studies confirm that water ice forms numerous distinct crystalline phases and polymorphs under varying temperature and pressure conditions, each characterized by a unique crystal lattice structure and hydrogen-bonding network.
The claim is specific, empirical, and testable. Multiple retrieved papers explicitly study different ice polymorphs (such as ice II, VI, VII, VIII, X, and various high-pressure or superionic phases) and confirm that these distinct phases possess unique crystal lattice structures, densities, and symmetries. No papers refute the claim.