Why are Box Jellyfish Clear?

Box jellyfish, also known as cubozoans, are some of the most venomous creatures in the ocean. They have a unique box-like shape and are almost completely transparent, making them difficult to spot in the water. But why are they so clear?


One of the main reasons why box jellyfish are so clear is for camouflage. The transparency helps them blend into their environment, making it harder for predators to spot them. This also allows them to sneak up on their prey more easily.

Light Refraction

Another reason why box jellyfish are so clear is because of light refraction. Light passes through their bodies and is bent in different directions, which makes them appear invisible or translucent. This helps them avoid detection from predators and prey alike.

Protection from UV Rays

Finally, box jellyfish’s transparency also serves as a form of protection from ultraviolet (UV) rays. By being transparent, they can absorb less UV radiation than other animals with darker pigments. This helps keep them safe from the sun’s harmful rays.

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