Austria 2025 3 Euro Colored Collectible Coin Glowing in UV Light – Firefly Squid.

This is the tenth coin in the “Glowing Water World” series.

The reverse of the coin features a wide band reminiscent of an ancient porthole, framing a water scene that appears black and empty in normal light, but when illuminated with ultraviolet light, several glowing squids become visible. The squids glow in flickering blue and violet tones, while the navigation element on the left glows green.

The obverse of the coin depicts silhouettes of all 12 magical sea creatures from the “Glowing Water World” series. Air bubbles rise among them, and the tail fin disappears beneath the waves on the right.