Why do jellyfish have tentacles

But jellyfish don't purposely attack humans. Most stings occur when people accidentally touch a jellyfish, but if the sting is from a dangerous species, it can be deadly. Jellyfish digest their food very quickly. They wouldn't be able to float if they had to carry a large, undigested meal around.

They dine on fish , shrimp, crabs and tiny plants. Sea turtles relish the taste of jellyfish. Some jellyfish are clear, but others are in vibrant colors such as pink, yellow, blue, and purple, and often are luminescent. The jellyfish multiplied in space.

When they came back to Earth, the scientists discovered that the space-born jellyfish couldn't figure out how to deal with gravity. Even though some jellyfish have very long tentacles, they never get tangled up or sting them.

It can have tentacles that are over 27 meters long - longer than the size of the blue whale which is the biggest mammal in the world! When we are stung it hurts because the toxin goes through our skin — ouch! Jellyfish eat many different types of things, such as small plants phytoplankton , copepods crustacean zooplankton , fish eggs and other small fish called larvae ; they also eat the planktonic eggs and young stages also called larvae of many different kinds of marine animals.

Some jellyfish even eat other jellyfish! When jellyfish form blooms they eat almost everything in the water and this can cause problems for fisheries because there is no food left for the fish to eat! Yes, jellyfish are very important animals in the ocean.

We should definitely respect and not harm them. They are food for a number of marine animals such as large fish and turtles. Even humans eat jellyfish — yummy! Jellyfish also provide habitat for many juvenile fishes in areas where there are not many places to hide. They can also protect the small fish from being eaten by predators with their stinging cells.

There is a lot that you can do to help us learn more about jellyfish blooms. Talk to your teachers, friends and parents about jellyfish and discuss how you can help clean up the ocean. These incredible invertebrates use their stinging tentacles to stun or paralyse prey before gobbling it up. From this small opening it both eats and discards waste.

And it serves another purpose, too — by squirting a jet of water from its mouth, the jellyfish can propel forward! Cool, eh? Jellyfish digest their food, which consists of fish, shrimp, crabs and tiny plants, very quickly. The jellyfish itself provides a tasty meal for other ocean creatures, particularly sea turtles , who like to guzzle them up regularly.