Showing posts with label Animals. Show all posts
Showing posts with label Animals. Show all posts

Wednesday, April 24, 2019

Irukandji Jellyfish

We just learned about the Immortal Jellyfish.

Another type of jellyfish is the Irukandji Jellyfish.

This is the smallest type of jelly, and also one of the most venomous ones in the world!

They can be as small as 0.2 inches, and as big as a little less than 1 inch.
Their tentacles can be as short as less than one inch, or as long as 3 feet.

If this type of jelly stings a person, after about 30 minutes they can have headaches, muscle pains, throwing up, or even a heart attack.
It can take a few hours to get better, or sometimes a day or even a few weeks!

Such a small jelly that pack such a dangerous sting can be scary to watch out for in the water.
These jellies mostly only live around Australia on the north side.

(from: wikipedia - irukandji jellyfish)

Irukandji Jellyfish - World's deadliest fishing - The Nature of Science

Kid Facts - Blast from the past: Argonaut Octopus

Wednesday, April 17, 2019

Immortal Jellyfish

We just learned about the Lion's Mane Jellyfish.

Another type of jellyfish is the Immortal Jellyfish, also called the turritopsis dohrnii.

This type of jellyfish does not get very big, less than one inch when it is fully grown.

This jellyfish starts out as a tiny baby jellyfish on the ocean floor.
When it grows up, it turns into a little bigger jellyfish and swims around the ocean looking for food.

If it gets hurt or is starving too badly, it can actually turn back into a baby jellyfish and start all over on the ocean floor!
That's like a grown up human turning back into a baby and starting life all over!

Because these jellyfish could do this over and over forever, they are called the immortal jellyfish, because immortal means you live forever.

(from: wikipedia - turritopsis dohrnii)

The Strange But Incredible Immortal Jellyfish - V101 Science

Kid Facts - Blast from the past: Bigfin Reef Squid

Wednesday, April 10, 2019

Lion's Mane Jellyfish

We just learned about the Cannonball Jellyfish.

Another type of jellyfish is the Lion's Mane Jellyfish, also called the Giant Jellyfish or the Hair Jelly.

This is the largest type of jellyfish in the world, with the biggest one ever found being over 7 feet wide, and over 120 feet long.
That's taller than a house, and even longer than the blue whale!

Most of these jellies only grow to be about 2 feet wide, and they live in the very cold parts of the pacific ocean.
They swim about 65 feet under the water, and eat very tiny animals.
Other big animals like leatherback sea turtles love to eat these jellyfish for a snack!

They have over a thousand stinging tentacles, but they don't hurt too bad for humans, just the tiny animals they want to eat.

(from: wikipedia - lion's mane jellyfish)

Lion's Mane Jellyfish - Matteo Endrizzi

Kid Facts - Blast from the past: Flamboyant Cuttlefish

Wednesday, April 3, 2019

Cannonball Jellyfish

We just learned about the Black Sea Nettle.

Another type of jellyfish is the Cannonball Jellyfish, also called the cabbagehead jellyfish, or Stomolophus meleagris.

It gets its name because it is about the size of a cannonball, and it is round and sometimes brown colored.
They grow to about 10 inches wide, and underneath they have arms taht they use to catch prey or to swim.

These jellies are usually found in the Atlantic ocean, all the way from North America to South America.
Sometimes they are found in the Pacific ocean too, but not as much.

They mostly eat small animals like plankton, by letting out some mucus that has a toxin poison in it.
This poison keeps away predators and stings the small fish or plankton so they can eat them.

Humans normally would only get an itchy sting from these jellies, but they can cause humans to have heart problems or eye problems if they are stung.

The leatherback sea turtle is the top predator for these jellies and will eat them right up.

(from: wikipedia - canonball jellyfish)

Cannonball! - Monterey Bay Aquarium

Kid Facts - Blast from the past: Orthoceras Nautilus

Wednesday, March 27, 2019

Black Sea Nettle

We just learned about the Fried Egg Jellyfish.

Another type of jellyfish is the Black Sea Nettle, also called the black jellyfish, sarlacc jellyfish, or chrysaora achlyos.

This type of jelly lives in the Pacific Ocean, from California to British Columbia.

They can grow to be very big, over 3 feet wide and about 20 feet long.
The color of their bell top can be dark purple or black, and their tentacles are usually a lighter purple color.

For food these jellies eat plankton or other jellyfish by stinging them and then using their tentacles to bring them to to their mouths.
Their tentacles have thousands of stingers that stun or kill their prey.
People would get a painful sting from them, but they are not deadly.

(from: wikipedia - chrysaora achlyos)

Diving with Black Sea Nettle Jellyfish ( Chrysaora achlyos ) - CDub

Kid Facts - Blast from the past: Firefly Squid

Wednesday, March 20, 2019

Fried Egg Jellyfish

We just learned about the Blue Blubber Jellyfish.

Another type of jellyfish is the Fried Egg Jellyfish or egg yolk jellyfish.

There are two types of jellyfish that have this nickname.
Their big long science names are phacellophora camtschatica, and cotylorhiza tuberculata.

The phacellophora camtschatica grows up to 2 feet wide and has tentacles up to 20 feet long.
It lives in the cold water of the ocean.
To eat, it snacks on other tiny jellyfish or types of plankton that get stuck in its long tentacles.
This jelly's sting is so weak that sometimes small crabs will ride on top of its bell and will even steal food that it has trapped in its tentacles!

(from: wikipedia - phacellophora camtschatica)

Egg Yolk Jellyfish - Phacellophora camtschatica - Jellyfish Are Awesome

The cotylorhiza tuberculata grows to about 16 inches wide, but its tentacles are much shorter.
It lives in warmer water, mostly in the Mediterranean Sea, and is sometimes even called the Mediterranean Jellyfish.
There are so many jellies in that water that they get in the way of boating and fishing, and sometimes they will remove thousands of jellyfish in a year!

(from: wikipedia - cotylorhiza tuberculata)

Samos - Fried egg jellyfish - Torben Olsen

Kid Facts - Blast from the past: Cirroteuthis Octopus

Wednesday, March 13, 2019

Blue Blubber Jellyfish

We just learned about the Nomura's Jellyfish.

Another type of jellyfish is the Blue Blubber Jellyfish, also called the jelly blubber or catostylus mosaicus.

This type of jelly lives over by Australia, and swims around with lots of other blue blubbers in big swarms.

Sometimes it is blue, or white or even brown, and it grows to be about 18 inches.
They mostly eat small things like plankton or fish, and they have stingers that hurt people but won't kill a human.

(from: wikipedia - jelly blubber)

Blue Blubber Jellyfish Tank --The Aquarium King-- - The Aquarium King

Kid Facts - Blast from the past: Grimpoteuthis - Dumbo Octopus

Wednesday, March 6, 2019

Nomura's Jellyfish

We just learned about the Moon Jellyfish.

Another type of jellyfish is Nomura's Jellyfish.

This is the biggest jellyfish in the world, and can grow to be over 6 feet wide and weigh over 400 pounds!
In only six months they can grow from the size of a grain of rice to 6 feet wide.

They live over near China in the Yellow sea and East China sea.
For food these jellies start eating small things like plankton, but then as they get bigger they will eat some kinds fish.
Other animals that eat these jellies are swordfish, tuna, sunfish and leatherback turtles.
Even some people eat these, and in Japan someone makes a type of vanilla and jellyfish flavored ice cream.

They do have a sting that is painful, but as long as the person gets to a doctor they will be ok.

(from: wikipedia - nomura's jellyfish)

Nomura's Jellyfish, Japan - SuiTube5

Kid Facts - Blast from the past: Blue Ringed Octopus

Wednesday, February 27, 2019

Moon Jellyfish

We just learned about the Flower Hat Jelly.

Another type of jellyfish is the Moon Jellyfish.

This type of small jellyfish only grows to be about 12 inches wide, and is mostly see through.
It lives in cold or hot water in just about every part of the ocean in the world.

They do not move very much, just mostly float around and try to eat up some plankton or fish eggs floating in the water.
Other animals eat these jellyfish a lot, like fish or birds.
Their sting is so little that most people can even pick up this jellyfish and hold it in their hand.

(from: wikipedia - aurelia aurita)

Moon Jellies - PtDefianceZoo1

Kid Facts - Blast from the past: Hawaiian Bobtail Squid

Wednesday, February 20, 2019

Flower Hat Jelly

We just learned about the Crystal Jelly.

Another type of Jellyfish is the Flower Hat Jelly.

These jellies live in the Pacific ocean near Japan and South Korea.
The grownup jellies only live for a few months.

They rest on the bottom of the ocean during the day, then at night they float up to catch their prey, like small fish.
It's bell is mostly clear with a few darker stripes on it.
Around the bell it has tentacles around the rim of their bell that it can use to sting prey.
If a person gets stung by a flower hat jelly they will usually just get a painful rash.

A full grown jelly can grow to be about 6 inches wide.
When they are just starting to grow up, they are usually less than 1 inch wide.

(from: wikipedia - flower hat jelly)

Welcoming Flower-hat Jellies! - Tennessee Aquarium

Kid Facts - Blast from the past: Coconut Octopus

Wednesday, February 13, 2019

Crystal Jelly

We just learned about the Upside Down Jellyfish.

Another type of jellyfish is the Crystal Jelly.

This type of jelly is mostly clear, with lines called radial lines in the bell part of its body called the bell that help it swim.

Around the outside of the bell are small tentacles that it uses to sting its prey, but the sting does not hurt humans.

It's mouth is hanging down in the middle, and this jelly eats very tiny things like plankton or barnacles.

They live mostly in the Pacific Ocean, off the coast of California.

(from: wikipedia - aequorea victoria)

Crystal Jellyfish Are Clearly Awesome! - Monterey Bay Aquarium

Kid Facts - Blast from the past: European Squid

Wednesday, February 6, 2019

Upside-Down Jellyfish

We just learned about the Cauliflower Jellyfish.

Another type of Jellyfish is the Upside-Down Jellyfish, also called the Cassiopea Andromeda.

This kind of jellyfish usually lives in the sand or mud.
A lot of times people think this jelly is a sea anemone because it lays on the ground.
It lays on its back with its arms up waving around, and it uses its bell to keep the water flowing up on its arms.
If some animals come along to its arms, they will get stung and then fall into the jellyfish's mouth that is pointing up.

These jellies also live with algea growing in and around it, and some shrimp, and some other very small animals called zooxanthellae.
These tiny animals help keep other animals away that might hurt the jelly, and the jelly helps keep predators away that might hurt them.

(from: wikipedia - cassiopea andromeda)

[HD] No Sea anemone!!! Upside-down jellyfish / Mangrovenqualle @ Aquazoo [29/52] - FischbottichTV Nils

Kid Facts - Blast from the past: Cuttlefish

Wednesday, January 30, 2019

Cauliflower Jellyfish

We just learned about the Purple Striped Jelly.

Another type of jellyfish is the Cauliflower Jellyfish, also sometimes called the crown jellyfish or cephea.

The rounded top of a jellyfish's body is called the bell.
On top of this jellyfish's bell is what looks like a cauliflower crown, so that is where they get their nickname.

The bell of this jelly is a bluish purple colored skirt, that they use to swim along.
On the bottom of the jelly are large orange brown mouth arms that it uses to eat with, and a bunch of very small tentacles that it uses to sting its prey so it can eat it.

(from: wikipedia - cephea)

Crown Jellyfish - kitachan3

Kid Facts - Blast from the past: Chambered Nautilus

Wednesday, January 23, 2019

Purple Striped Jelly

We just started learning about Jellyfish.

One kind of jellyfish is the Purple Striped Jelly, also called the Chrysaora colorata or the mauve stinger.

This jellyfish lives mostly in the Pacific ocean near California.

The main big body of a jellyfish is called a "bell".
This animal's bell is a little over two feet wide, and usually has stripes going out from the middle, almost like spokes on a bicycle.

Sometimes small crabs called cancer crabs live in the jellyfish, and eat tiny little parasites called amphipods that hurt the jellyfish.

They usually have about eight long skinny dark arms and four frilly oral arms.
These jellies use their long arms to sting their prey, and then bring it over to the frilly oral arms.
The oral arms help to hold on to the prey, and bring it up to the jellyfish's mouth so they can eat it.

(from: wikipedia - chrysaora colorata)

Purple-striped jelly (Chrysaora Colorata) - The Nature Box

Kid Facts - Blast from the past: Common Octopus

Wednesday, January 16, 2019


We just learned a lot about Cephalopods!.

Let's start learning about something new: Jellyfish!.

The fancy name for all of the different types of Jellyfish is "Medusozoa"
They got this name because a famous scientist named Carl Linnaeus thought their long tentacles kind of looked like the snake haired woman named Medusa in Greek mythology.

Some scientists now use the name "jellies" or "sea jellies" instead of jellyfish, because they are not really a kind of fish.

Whatever you call them, these cool weird animals are found all over the world, in all shapes and sizes!

(from: wikipedia - jellyfish)

Kid Facts - Blast from the past: Cephalopods

Wednesday, January 9, 2019


We just learned about the Octopus - Three Hearts.

Another part of a cephalopod's body is the Radula.

We know that the octopus has a beak and that it uses the beak to bite it's food.
After the food gets into its mouth, there are tiny little teeth called the radula that help grind up the food.
It's almost like the octopus has a tongue with spikes on it that it rubs against the food to break it up into tiny pieces.

(from: wikipedia - radula)

Kid Facts - Blast from the past: Frog Teeth

Wednesday, January 2, 2019

Octopus - Three Hearts

We just learned about the Statocyst.

Another interesting thing about cephalopod bodies is the Octopus - Three Hearts.

An octopus has all th ree of it's hearts up in the head part of the body.

One of the hearts is called the systemic heart, and it pumps the blood all over their body, all the way to each arm and back.

The other two hearts are called branchial hearts, and they bring the deoxygenated blood back to the gills for more oxygen.

The blood in an octopus is thicker than a human, so it is harder for the octopus to pump through their body.
When they are swimming they do not use their systemic heart, so they get tired quickly and usually stop for a rest.

(from: wikipedia - octopus)

Kid Facts - Blast from the past: Frog Skin

Wednesday, December 26, 2018


We just learned about the Cephalopod Skin.

Another part of a squid's body is the Statocyst.

This is a sac inside the squid's head that has small hairs and a hard ball inside it.
When the squid swims around, the ball rolls around inside and moves the hairs, and the squid can tell which way it is swimming.

It also can use this statocyst to hear low sounds, when the sound is loud and the hairs are vibrating the sac.

(from: wikipedia - statocyst)

Kid Facts - Blast from the past: Tadpoles

Wednesday, December 19, 2018

Cephalopod - Skin

We just learned about the Cephalopod - Cirrus.

Another interesting thing is the Cephalopod Skin.

Cephalods like the octopus or cuttlefish can change their skin color, or if their skin is bumpy or smooth.
A fancy word for this is polyphenism.

Their skin is made up of an outside layer that has gooey mucous and sensors to tell when it is being touched.

Underneath that top layer is a layer made of collagen, which is like a fatty cell that holds skin together.
There are also cells in that layer for changing the color of the skin.

Most of an octopuses body is made up of soft tissue like collagen, and their squishy body makes it so they can get through really small holes.
They don't have any hard parts of their body except the beak, so even a big octopus can squeeze through a 1 inch hole!

(from: wikipedia - cuttlefish)

Watch The Octopus Squeezing Through Very Tiny Spaces - Animals R Us

Kid Facts - Blast from the past: Frogspawn

Wednesday, December 12, 2018

Cephalopod - Cirrus

We just learned about the Cephalopod Eyes.

Another part of the Cephalopod is the Cirrus.

A cirrus is a type of harder tentacle that doesn't bend as well, and doesn't have any suckers or hooks.
More than one cirrus is called cirri.

The nautilus has cirri that it uses to grab it's prey.
Each cirrus has ridges on it, so they use that to try and hold on really strong.
They hold on so strong with their cirri, that if the prey does get away they have probably ripped the cirri right off!

(from: wikipedia - nautilus)

Kid Facts - Blast from the past: Masked Tree Frog