Are you curious to learn some weird and wonderful facts about jellyfish?
If so, excellent! You are in exactly the right place my friend…
It’s time to chat about jellyfish facts.
Let’s dive right in…
Facts About Jellyfish
1 – Jellyfish are not actually fish, but they do have a jelly-like substance inside of them.
2 – There are over 2000 types of jellyfish in the world and most can’t even be identified.
3 – Jellyfish sting people by firing their tentacles at them or injecting venom into their skin.
4 – The average lifespan for a jellyfish is three to six months because they grow so fast and need lots of food to survive.
5 – Scientists believe that there could be as many as 100 million tons of jellies in the ocean right now!
More Facts About Jellyfish
6 – Most jellyfish live in the ocean, though some live near the shore and others can be found in freshwater lakes or rivers.
7 – Jellyfish have been around for at least 500 million years – that’s before dinosaurs.
8 – There are more than 2,000 different species of jellyfish worldwide but only around 100 types can be found in North America.
9 – Most jellyfishes don’t even have brains or blood – they’re just animals with tentacles! Jellyfish they do have an internal skeleton made up of 95% water.
10 – The word “jellies” can refer to any marine creature that has a gelatinous body, including sea anemones and comb jellies.
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11 – Jellyfish are not fish – they’re actually invertebrates.
12 – The Portuguese Man-of-War is one of the most dangerous types of jellyfish because its sting feels like an electric shock and can lead to heart attack or death.
13 – If you get stung by a jellyfish it will hurt for hours or days depending on the severity of the sting and where it hit you. Some people have begun using vinegar on their skin to ease pain from a jellyfish sting.
14 – Jellyfish sting their prey with stinging cells called nematocysts, which release venom to paralyze it.
15 – The most common type is the moon jellyfish – they float around in shallow water and feed off plankton or other small animals.
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16 – Some people eat jellyfish because they’re high in protein and low in calories.
17 – One type of jellyfish is called the “cannonball” because it shoots out its tentacles and then retracts them again, like a cannonball being fired into the air.
18 – Some types of jellyfish produce light so they can be seen at night by predators such as fish or turtles who would eat them otherwise.
19 – It is said that when jellyfish die their bodies release eggs into the water which then hatch and grow into new jellyfish. A single jellyfish can produce up to 200 million eggs a day.
20 – They can grow up to 3 feet long and live for around two years.
More Facts About Jellyfish
21 – A group of jellyfish is called a smack, army or swarm and sometimes they can number in the millions!
22 – Most jellyfish are not poisonous.
23 – They live all over the world and can be found as deep as 3,000 feet below the surface.
24 – The most common type is the moon jellyfish which has an umbrella shape with eight arms that trail behind it.
25 – Some people call them “jelly blobs” because they can’t see any shape to their bodies. Their tentacles have stinging cells that paralyze prey so it can’t move away from the jellyfish’s mouth.
BONUS FACTS
Jellyfish live for an average of 6 months but some can live for as long as two years if they don’t get eaten by predators such as turtles, sharks, and dolphins.
It’s one of the few invertebrates that has eyes and can sense light from deep within the water (called photoreceptors).
The oldest jellyfish fossil is about 500 million years old.
