The Strange Mystery of the Barreleye Fish

The Pacific barreleye fish is a unique deep-sea creature with tubular eyes and a transparent head. Its eyes, located behind its nares, are adapted to gather light and focus on prey above. The fish's green eyes help filter sunlight, enhancing its ability to detect bioluminescent prey. Researchers discovered that the fish can rotate its eyes to look forward, aiding in feeding. The transparent head protects its sensitive eyes from stinging tentacles. Despite these adaptations, much remains to be learned about this elusive fish.

Describe the significance of the green pigment in the barreleye fish's eyes.

What unique ability do the barreleye fish have regarding their eye movement?