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Which fish has the biggest eyes relative to its body size?

Quick Answer

The barreleye fish is famous for its proportionally huge, tubular eyes that help it detect prey in the deep sea.

The Full Story

The barreleye fish has some of the most unusual eyes in the animal kingdom. Its eyes are large, tubular and adapted for spotting faint light and prey in deep water. These eyes are so distinctive that the fish has become one of the best-known deep-sea oddities. Its translucent head also helps scientists observe its internal structures.

Key Facts

1.Has tubular eyes adapted for deep water
2.Lives in the deep sea
3.Its head can appear translucent

YouTube Angle

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"This fish looks like it has a transparent helmet β€” and giant eyes inside it."

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