Even though the blue of the water in this photo looks fake, it hasn’t been retouched. The water inside the cave is a crystalline blue with silver reflections. Seen here is the entrance to one of ...

Inland blue holes, however, are unlike any other environment on Earth, thanks largely to their geology and water chemistry. In these flooded caves, such as Stargate on Andros Island, the reduced ...

Beneath the land surface of the Bahamas, the underwater caves known as blue holes stretch for hundreds ... long legs that help them navigate through water-logged vegetation. Today, other ...

Blue holes are water-filled vertical caverns ... They believe that the bottom might be an intricate network of caves and tunnels, potentially interconnected. This unseen world could be a haven ...