Most MYSTERIOUS Single Celled Organisms!

Check out the Most MYSTERIOUS Single Celled Organisms! From unicellular amoeba to algae and bacteria, this top 10 list of one celled biology organisms will amaze you!

8. Bdelloid rotifers
These particular single-celled organisms can be found in a very common place: a single drop of water. That's not to say all water has these single-celled organisms, but you will find them in a lot of H20. In fact, they are found all over the world, including in very hard places to live, like Antarctica.

7. Physarum polycephalum
One of the main reasons why scientists study single-celled organisms is because they're eager to learn just how advanced they are and how they grow through evolution. Which is why an experiment in 2016 featuring the Protist organism known as Physarum polycephalum is so important. Because it was proven through tests that the Physarum polycephalum is capable of learning via Habituation.

6. Stentor
A common conception about single celled organisms is that they're always very small, even being microscopic 99% of the time, but there are actually a wide range of somewhat large single-celled organisms out there for people to observe. One such one is the Stentor species. These organisms can grow up to 2 millimeters in length. I know! Crazy! An entire 2 mm! Hey at least they are visible with the naked eye.

5. Euglena
This single-celled organism is very widely studied and can be found in all kinds of water, even your pool. Sometimes they can be found in such large amounts that they will even change the color of the water! They are a great food source for tons of marine creatures.

4. Spirostomum
If you were impressed by the stentor then just wait for this guy! This protozoan will really impress you! This particular species can grow up to 4 millimeters at times. Because of this, it's actually mistaken for certain worm species, and given its shape, that isn't too hard to see why. They live in water as well and are incredibly adaptable. Surprisingly, they are also one of the fastest creatures on Earth!

3. Trichoplax adhaerens
Those who initially found and studied the Trichoplax adhaerens were in for quite a surprise. Because when it was first found in 1883 by a German Zoologist, they actually thought it was a larval state for an animal. They believed this because the Trichoplax adhaerens was actually an incredibly simple creature in terms of construction. It wasn't until the 1960's and 1970's that new research was done on the organism, and it was discovered to be a new phylum of creature.

2. Chaos Carolinensis
The Chaos Carolinensis is an amoeba that can reach a size of about 5 millimeters at max, which is about the size of a sesame seed. Fun fact, because of its “large size” you can't put a cover slip on it if you want to look at it under a microscope because if you do, you could hurt the poor creature.

1. Gromia Sphaerica
One of the more recent finds in the world of single-celled organisms, Gromia Sphaerica, actually baffled the scientists that found them. Why? Because in 2000, they dove into the Oman Margin of the Arabian Sea, and when they reached the sea floor, they found these "rocks" about 1.2 inches long, and yet there were trails in the sand. It looked like these rocks were actually moving at a steady pace.

Origins Explained is the place to be to find all the answers to your questions, from mysterious events and unsolved mysteries to everything there is to know about the world and its amazing animals!

[Moontanman]

Rotifers are not single celled organisms...

[ossen]

*Amoeba was the first in line of one cell organisms that we learned about in school.*
Ahhh, the memories....

[maxblay]

Has anyone seen the YouTube video of the giant amoeba in a gatorade bottle I'm surprised that wasn't mentioned

[marketingjones]

I’m thinking that “single-celled” doesn’t mean what I thought it meant?

[jaharising]

Right, so, ... 4:20
"...this allows the d.n.a. and cells within the stentor to grow..." So what, like, ..all those cells within the single celled organism? Those cells? A bit confused.

[iedesnoek]

Please, origins explained, do some more research before you put out a video

[fiveguy]

seems like a contradiction to say single celled organism then talk about some of these having more than one cell. i thought single cell meant one cell. maybe i misunderstand what single means

[samhaines]

life in its myriad of forms blows my fragile little mind! tons of cool info here, thanks!

[steven]

I like how you r measure all your 2 and 3 millimeters with a tape measure that is in inches! LOL. Also - in the beginning when you say "and they will Warmest Wishes -- You are The Best!

[np]

You have such a great voice? I could hear you all day long.

[cymonearcher]

The plant/animal/bacteria one was the weirdest to me

[shefchenko]

I recognized it- it's one of my friends from high school :D

[MrKclo]

fact... largest single cell is the ostrich egg

[georgekraft]

It's kinda hard to decide the weirdest

[eljanrimsa]

Interesting creatures. But the texts have been copy&pasted by someone who didn't really care what the words mean. Even the simple plain English words like "single".

[xtneovt]

Lmao this is the first comment in 2 years