Blurred vision of the jellyfish
2005/05/12 Galarraga Aiestaran, Ana - Elhuyar Zientzia
Do the jellyfish have eyes? Many people would not be able to answer, since when a jellyfish surrounds us we try to leave as soon as possible without looking if they have eyes or not. However, anyone who has been able to see a sand on the shore of the sea, would surely answer no.
So now the researchers have seen that yes, there are jellyfish who have eyes and not of any kind. Jellyfish have no brain, they only have a nervous ring. Therefore, they do not have a structure that processes all the information that our eyes receive. That doesn't mean they don't see anything.
The jellyfish Tripedalia cytosphora, which lives in the waters of the Caribbean, for example, has a blurred vision, but is enough to swim anywhere. Most jellyfish do not move in search of food, but are moved by water from one side to the other, and feed on the food they accompany them. This jellyfish, however, hunts.
The hunting marmoka has four corners and a system that helps you see in every corner. The system consists of four eyes and two lenses. These eyes are really simple, simple dots filled with pigments. With it, he receives light, which allows him to perceive the great structures that surround him. Therefore, when you are going to find food, the jellyfish is able to find out where it is going.
