The Blue Veins of Icebergs - Nature’s Frozen Wonder ❄️🔵 These stunning blue streaks, or ‘blue heart,’ form when seawater or meltwater rapidly refreezes in crevasses, creating ultra-dense ice with minimal air bubbles. This dense ice absorbs longer wavelengths (red, yellow) and reflects shorter blue wavelengths, giving it a glowing blue hue. Once it melts or shatters, the trapped air escapes, turning the ice completely clear or even black in the water. The outer surface often develops a dimpled,