What do Jellyfish Eat? Jelly fish is an oceanic species. It is said that they have come to the planet earth before the dinosaurs. There are 200 types of jellyfishes living in oceans in various depth and temperature. What do Jellyfish eat as they seem to be a blob of flesh? But what do they eat as they don't have bones, heart, brain or eyes? If you want to know the answer of the question that “what do Jellyfish eat” then it is the correct article for you to know about the information. Jellyfishes totally rely on there nervous system which is highly developed. What do jellyfish eat? Jelly fishes eat almost anything comes close to their large tentacles. To eat jellyfish use there mouth situated underneath their body. There exist long tentacles attached with their body. These tentacles are filled with toxic venom and used to poison their prey as well as to swim. They firstly pierce their prey with tentacles which paralysis the prey then put them into their mouth.Some jellyfishes are of microscopic size. So what do jellyfish eat when they are so small? These types of jellyfishes eat microscopic marine creatures. When we come to know that what do jellyfish eat the thing comes up into our mind is that how do they digest? A jellyfish has a simple and incomplete digestive system. After putting the food into its mouth the digestive system starts working immediately and nutrients are absorbed. Then the waste is discharged also by the same place.  The body structure of jelly fish has always put a question that what do jellyfish eat? Jellyfishes are meat eaters. The favorite food of small jelly fishes are zooplanktons, small fishes, fish larvae and larvae of other marine creatures. Big jellyfishes eat whole adult fish even a jellyfishes as well. A big jellyfish can eat a shrimp also. Some species of jelly fishes are very aggressive. They might attack in groups and eat many marine creatures by intoxicating their venomous tentacles. A different type of jellyfish is spotted jellyfish. What do jellyfish eat? Spotted jellyfish are also called filter feeders. They are said to absorb the salty oceanic water and through water they absorb other marine creatures nearby also. They cause a big bad effect to sea life as they eat many useful zooplanktons and other useful marine resources in a large quantity. In this way they even eat shrimps and oysters too. The most dangerous jellyfish is box jellyfish. These species of jellyfish is found in northern Australian seas and are very good swimmer among all other jellyfishes. Other jellyfish can't swim in once they are taken to the shore because of the water current but box jellyfishes are exceptional. What do they eat? The box jellyfish eats every thing including human being. The venom of box jellyfish can kill a human being in 3 minutes. Nearby 65 people were killed in Australia by box jellyfish in a year. They are one of the most dangerous marine creatures for human beings. For preying the human mainly first they wait and spread out their tentacles which has millions of strings while swimming. When human being comes in contact with those venomous strings they attach them to their body.With there extraordinary nervous skills and great quality of matching themselves with any environment of sea has made them survive on earth for so long.