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What Do Jellyfish Eat: Things You Need To Know

What Do Jellyfish Eat: Things You Need To Know

What jellyfish eat is a very common query asked by people over the internet. Students are looking for information about the jellyfish diet for their science or biology class. Hobbyist who are planning to get a jellyfish from the wild or pet shop are also wondering about the food of this weird, yet fascinating creature.

This article aims to provide not only information on what jellyfish eat but also other common questions related to that, including:

  • What do jellyfish look like?
  • What do jellyfish eat in the wild?
  • What do pet jellyfish eat?
  • Where do jellyfish live?
  • Do jellyfish eat seaweed?
  • What are jellyfish predators?

Read along to learn more about the diet and life habit of jellyfish. Welcome to the jellyfish world!



What do jellyfish look like?

So, let’s first find out what a jellyfish look like in detail? But before that, let us talk about the importance on why you need to know the answer to this question. I know that you love going to the beach, but FYI: Thousands of people are getting stung by jellyfishes just because they do not know what it looks like. Some of the species of jellyfish are so poisonous that can even kill people on the spot! So you better know what jellyfish looks like before planning your next outing.

Jellyfish are generally transparent, umbrella shaped and come in a various sizes and colors. Some species of jellyfish are larger than human beings but some are smaller than pin heads. The majority of jellyfish species all around the world is harmless, but there are few that you need to be aware of because they are poisonous. Some species such as Portuguese man-of-war and Box jellyfish are known to cause severe damage and death to its victims. Box jellyfish are the species of jellyfish that are commonly known all around the world because of its painful and deadly sting. The stinging cells of these creatures are located on their tentacles.

Jellyfish are not actually fishes. Jellyfish are scientifically classified as Cnidarians, which are invertebrates that has no heart, brains, or blood. Most species of jellyfish swim in groups that are commonly called a bloom.

To tell what jellyfish look like you should know that many type of jellyfish are hard to see when they are swimming because of their transparent appearance. So watch out for anything that’s floating towards you when you are swimming at the beach.

What do jellyfish eat in the wild?

Generally speaking, jellyfish are known to be opportunistic feeders, meaning they can eat almost anything that they come across while swimming. Some species are specific feeders, which means they only consume small fish eggs. Other species devour a whole fish as their meal. They use their stingy tentacles to hunt down and neutralized its prey. Many types of jellyfish are able to kill the fish but are not able to eat it because it is larger than they can swallow. The bell is a hole underneath its body that serves as its mouth.

So, what do jellyfish eat in captivity then? Let’s find out!

What do pet jellyfish eat?

If you are an aquarium lover or planning to get a jellyfish for your tank, this section is for you.

Most jellyfish species that are available on the pet store is fed on live shrimp, especially the juvenile brine shrimp. This type of shrimp is a common jellyfish diet in the wild. Live baby brine shrimp is available on some pet shop or even online.

Jellyfish also consumes several kinds of dried planktons or even dried planktonic mix which is available in some pet shop. You can also try the Cubic Medusa Jellyfish Food, which is available to be ordered online. This product is said to be a balanced diet for your pet jellyfish that meets all of your pet’s nutritional needs. Just make sure that you use this product along with live baby brine shrimp to keep your pet jelly in optimum health condition.
How often do I have to feed my pet jelly fish? Depending on the species of jellyfish you are keeping, this pet needs to be fed at least once a day.

Where do jellyfish live?

Most of the jellyfish species that we know lives in large bodies of water such as oceans. Originally, jellyfish live in seas but ships accidentally drove away jellyfish populations to oceans over the years.

According to evolutionary scientists, jellyfish occupied the earth before majority of the animals did. They believed that jellyfishes were already existing before the dinosaurs. So why do they survive up to this time? It’s because of the jellyfish’s ability to adapt to its environment. Jellyfish love to swim in deepest part of the ocean, but they can also survive in shallow waters.

What do you think: Do jellyfish eat seaweed?

You might also ask, do jellyfish eat seaweeds and other marine plants? The answer is no. Jellyfish are predators and they love to consume small animals like small fish, lobsters, crabs and shrimps.

What are predators of jellyfish?

What animals eat jellyfish? The main predator of jellyfish are the jellyfish that belong to other species. Over population among jellyfish can be dangerous because it can easily deplete the population of small marine life, especially the ones that they love to eat, so their population needs to be checked and balanced. The answer to that are the jellyfish’s natural enemies, or the animals that love to eat them. Salmon, sharks, tunas, swordfish and other bigger species of fish love to eat jellyfish.

Marine reptiles such as sea turtles also eats jellyfish. But sometimes sea turtles have mistakenly consume plastic bags and other garbage for they think those are jellyfish. As a result, sea turtles die and its population has declined over the years just because many people are not responsible enough with their garbage disposal. Efforts have been made to alleviate the effects of water pollution to sea turtles and other marine life.

In summary, can you now answer the question about the diet of jellyfish? Yes, majority of the jellyfish species are eating small sea animals like small fish, lobsters, crabs, shrimps and planktons. Others hunt jellyfish of different species, especially the smaller ones!

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