Ever wondered how Jellyfish reproduce? Or how many anuses a sea wasp has? Well, probably not, but you can find out here anyway.
FUNNY FACTS ABOUT THE JELLYFISH
- The Box jellyfish has 64 anuses.
- The Box jellyfish also has 24 eyes, but despite this, it can only see in a blurry fashion.
- Jellyfish do not have a brain, respiratory system, circulatory system, or indeed an excretory system. Because of this, the jellyfish’s ‘mouth’ is also used for waste expulsion.
OTHER COOL STUFF YOU PROBABLY ALREADY KNOW
- Jellyfish NEVER stop growing.
- Jellyfish are 95% water, and some types, nearly 98%.
- Jellyfish are not actually classified as ‘fish’, some people prefer to refer to them as ‘sea jellies’. They do not have gills (or lungs)
- To “swim”, jellyfish shoot jets of water that propel them forwards. However, most jellyfishes movements are limited to up and down, they are carried along by the tide.
- Jellyfish are actually older than dinosaurs (well, as a species, not individually)
- To breathe, Jellyfish absorb oxygen through their membrane-like skin.
- Jellyfish are EVIL (not strictly true, but they look it)
- Though jellyfish are most commonly as large as a big plate, one type of jellyfish in the Arctic sea can be up to 7 ft in diameter, and the tentacles can also be up to 120 feet long!
- The biggest jellyfish can be up to 2 and a half meters wide, and it’s tentacles can be half as long as a standard football pitch.
- One of the biggest jellyfish is called the lion’s mane.
Yup, it’s what you sick people out there have been wanting… probably…
- During different parts of its life, the jelly fish is able to reproduce sexually AND asexually:
- Jellyfish can be either Male, or Female, and each sex develops their sperm or eggs in a special pouch on the inside of the jellyfish.
- They then (technically) throw up the sperm/eggs, as it passes through the stomach, and then the mouth.
- Some of the eggs stick to the mouth of the female jellyfish, and these are the ones that are fertilized.
- The embryo develops into, not a baby jellyfish, but a planula, and from there it begins a long journey, being carried by ocean currents. It eventually evolves into a polyp, which can then create more polyp via a process called budding. Eventually, grooves appear on the polyp, and it breaks open, revealing lots of disc-like saucers, which are in fact, baby jellyfish. So one egg fertilized makes a lot more than one baby jellyfish!
FINALLY, MORE COOL FACTS
- There is a type of jellyfish that lies upside-down on the seabed near coastlines (probably just waiting for a wader or some toddler to come and step on them…) that is plant-like in the way that it collects energy from the sun’s light.
- The Box Jellyfish, also named the ‘SEA WASP’ is the most poisonous jellyfish, and it’s sting can kill in 3 minutes… and it can move at almost 2 meters per second. If stung, the odds of getting back to the shore, or even SURVIVING are almost 0.
- Jellyfish kill more people than sharks (and for that matter, being hit on the head with a falling coconut)
- The jellyfish population can be decreased by particularly rainy season, because they prefer salt water.
- The amount of venom in a Box Jellyfish could kill 60 people.