Deep Sea Creatures

The barreleye fish has a completely transparent head filled with fluid, allowing its tubular eyes to rotate upward to spot prey silhouetted against the faint light from above. This bizarre adaptation makes it one of the most alien-looking creatures on our planet.

The dumbo octopus is the deepest-living octopus species, residing at crushing depths where sunlight never reaches. Named for its ear-like fins that resemble Disney's Dumbo elephant, it gracefully flaps through the abyssal darkness like an underwater ghost.

Despite its ominous name, the vampire squid doesn't drink blood. This living fossil can turn itself inside out when threatened and survives in areas with almost no oxygen. It's neither squid nor octopus but belongs to its own unique order.