These incredible invertebrates use their stinging tentacles to stun or paralyse prey before gobbling it up. They can make out shapes and distinguish between prey and predators quite easily. Although the eyes probably do not form images, Cubozoa can clearly distinguish the direction from which light is coming as well as … True jellyfish have no eyes. They have developed the ability to move rather than just drift, jetting at up to four knots through the water. Jellyfish, any planktonic marine member of the class Scyphozoa (phylum Cnidaria), a group of invertebrate animals composed of about 200 described species, or of the class Cubozoa (approximately 20 species). Ricardo marveled at how the jellyfish squeezed the complexity of vision and orientation into tiny rhopalia only about two hundredths of an inch long. Jellyfish have no brain, heart, bones or eyes. 5.0 out of 5 stars Yes, some jellyfish have eyes, and it was a pleasure to meet them. It is similar to evolving with a great pair of lenses, but it … Introduction. Kinda, sorry I'm … Jellyfish are terribly far sighted, or hyperopic. Jellyfish can detect light and dark, which they do with the ocelli. It is a really weird type of vision. You, like Ricardo Sztein, the protagonist of Jellyfish Have Eyes, may be fascinated by jellyfish for many reasons. The same way a Whale can "see" with sonar. The jellyfish’s mouth is found in the centre of its body. They are made up of a smooth, bag-like body and tentacles armed with tiny, stinging cells. The Bluebottle, Physalia utriculus, is a common, if unwelcome, summer visitor to Sydney beaches.At the mercy of the wind, they are sometimes blown into shallow waters, and often wash up onto the beach. Box Jellyfish Behavior. It "sees" bye sensing the pressure changes in the water in front of it. it like looking into a clear cube submersed in water. Actually the Box Jelly does not have an EYE like we do but it can see. In fact, for a few species their vision can be surprisingly complex . The Box Jellyfish has been given the nickname of the Sucker Punch Jellyfish. Four of them are much like our eyes (image forming) and the other 20 are light/dark sensors for obstacle avoidance. How many Eyes do Box Jellyfish have 24 Eyes. Only two of the eyes are similar to the eyes of vertebrates (like our eyes) and have the capability to form images. Despite their simple body design, some jellyfish have the ability to see. Box jellies are highly advanced among jellyfish. Yes you read it right, Box jellyfish have 24 eyes that can be divided into four different types. It isn’t understood why they have eyes though and very few species do. Reviewed in the United States on April 2, 2015 This wonderful book … There is an oddity in the jellyfish eyes. They have a lens that is well corrected, and is able to focus on a distance of 3.3 lens radii, but this is located behind the retina. 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