Jellyfish don't have brians !!! 😨
They don't have hearts or lungs either. So how do they function?
Jelly fish's skin is so thin that they can absorb oxygen right through it, so no lungs required.
They don't have any blood so they don't need a heart like we do to pump it.
They respond to their enviroment by using signals from a nerver net below the outer layer of skin also known as the
epidermis, that is sensitive to touch. Pretty cool. 😊
What do they eat? 👩🍳
Don't be fooled by their simple physique.
They eat a few things such as phytoplanktop, fish eggs, and other small eggs.
Some jellyfish even eat other jellyfish!! And when they form blooms they would eat almost everything in the water.
How long do jellyfish live?
Most jellyfish live for less than a year 😢, and the smaller ones may only live for a few days. 😭 Each species have a natural life cycle.
- The most familiar stage is the medusa stage where we already see the jelly fish swimming.
- Male and female jellyfish aka medusa reproduce and and create thousands of small larvae called planulae.
- The tiny larvae settle on the bottom of the ocean and then form a tiny polyp bud that looks like a tiny sea anemone.
- Then each polyp bud will make a baby jellyfish called a ephyrae, and they grow up very fast.
There's not much to a jellyfish 😅
They are composed of 3 layers. The first being the outer layer called the epidermis.
The middle layer made of a thick, elastic, jelly-like substance called mesoglea;and
an inner layed called the gastrodermis.
Apart of that they are made up of about 85% to 96% of water 💧.
Created by Diana Quintuna SheCodesFirst Project