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

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

Wednesday, December 5, 2018

Cephalopod Eyes

We just learned about the Cephalopod - Suckers.

Another different part of a cephalopid is the Cephalopod Eyes.

Different cephalopods have different shaped eyes.
Like some octopus have dumbbell shaped eyes, some squids have oval shaped eyes, cuttlefish have W shaped eyes, and nautilus have pinhole shaped eyes.

The one thing cephalopods have the same is that they can all see very well in the dark, but they can't see different colors very well.
Their eyes are built a lot like human eyes, but where our eyes block a lot of light, theirs let in as much as possible so that they can see in the very dark depths of the ocean.

(from: wikipedia - cephalopod eye)

Kid Facts - Blast from the past: Yellow Spotted Climbing Toad

Wednesday, November 28, 2018

Cephalopod - Suckers

We just learned about the Cephalopod Tentacle Hooks.

Another part of cephalopods is the Suckers.

Octopuses, squids and cuttlefish have suckers along the inside of their arms, and squids and cuttlefish have suckers at the end of their tentacles.

The outside of the suckers are usually shaped like a circular bowl.
The cephalopods have muscles below their suckers, that they use to make the suckers grab their prey.

(from: wikipedia - cephalopod limb)

Kid Facts - Blast from the past: Square Marked Toad

Wednesday, November 21, 2018

Cephalopod - Tentacle Hooks

We just learned about the Cephalopod Arms and Tentacles.

At the end of many squid limbs are Tentacle Hooks.

Different squids have hooks of different shapes, but they use them to grab their prey, hold on to them and pull them to their mouth.

(from: wikipedia - cephalopod limb)

Kid Facts - Blast from the past: Japanese Tree Frog

Wednesday, November 14, 2018

Cephalopod - Arms and Tentacles

We just learned about the Cuttlebone.

Another two parts of Cephalopod's body are the Arms and Tentacles.

It used to be that all of the legs of squids and octopuses were called tentacles, but a while back things changed and now they are seen as two different things: arms and tentacles.

The octopus only has 8 arms, because they are shorter and have suckers all along them.
Squids have 6 arms and 2 tentacles, and the tentacles are the ones with no suckers all along, but teeth or hooks on the end.

(from: wikipedia - cephalopod limb)

If Your Hands Could Smell, You’d Be an Octopus - Deep Look

Kid Facts - Blast from the past: African Dwarf Frog

Wednesday, November 7, 2018


We just learned about the Chromatophore.

Another part of some cephalopods is the Cuttlebone.

Just like you might think from the name, this is part of the cuttlefish.

It is a bone inside the cuttlefish that has a pocket for air.
The cuttlefish uses this to control when it floats or sinks.
It uses it's muscles to suck water out of the cuttlebone, which draws more air into it from its body, and it will float up.
Or it will push more water into the cuttlebone and it will sink.

(from: wikipedia - cuttlebone)

Kid Facts - Blast from the past: Stony Creek Frog

Wednesday, October 31, 2018


We just learned about the Cephalopod Ink.

Another part of many cephalopods is the Chromatophore.

Cephalopods have little sacks in their skin called cytoelastic sacculus, that are filled with something called pigment granules.

That's a lot of big words, but it basically means they have tiny bags of color all over their skin, and they use muscles to squish out more color or less color to change the way they look.

(from: wikipedia - Chromatophore)

Kid Facts - Blast from the past: Rhacophorus

Wednesday, October 24, 2018

Cephalopod Ink

We just learned about the Cephalopod Funnel.

Another part of a cephalopod is the Ink Sac.

This is inside the mantle where the gills are, and when an octopus or squid gets scared it will let out some black ink to hide, and to try and scare off anyone coming to attack it.

The ink just comes out of the ink sac, and they use the funnel that they squirt water out of to shoot the ink all over the place.

The ink is so dark that sometimes people use it to color types of food very dark.

(from: wikipedia - arrĂ²s negre)

octopus shooting ink! - Bilal El Hasnaoui

Kid Facts - Blast from the past: Wallace's Flying Frog

Wednesday, October 17, 2018

Cephalopod - Funnel

We just learned about the Octopus Gills.

Another part of a cephalopod's body is the Funnel, also sometimes called a siphon.

When a cephalopod like a squid or octopus breathes in, they suck water into their mantle and then push it through their gills.

When they breathe out, they shoot the water out of a tube called a funnel.
They can even use that water shooting out like a little water jet and push their body along under water.

(from: wikipedia - octopus)

Octopus jet siphon system - clarkq

Kid Facts - Blast from the past: Mission Golden Eyed Tree Frog

Wednesday, October 10, 2018

Octopus Gills

We just learned about the Mantle of an Octopus or squid.

When the octopus or squid wants to breathe, they breathe through Gills just like fish.

The gills are inside the mantle, so they will take water into their mantle, and use some muscles to close their mantle.
This makes the water push through their gills where they can get the oxygen they need.

(from: wikipedia - octopus)

Amazing breathing of an Octopus - isarounddaworld

Kid Facts - Blast from the past: Bornean Eared Frog

Wednesday, October 3, 2018


We just learned about the Octopus Beaks.

Another part of the Octopus is the Mantle.

This is the part of their body above their eyes and arms, that usually has fins on it.
The mantle usually has the heart and stomach and other organs inside of it.

(from: wikipedia - mantle (mollusc))

Kid Facts - Blast from the past: White's Tree Frog

Wednesday, September 26, 2018

Octopus Beaks

We just learned about the Japanese Flying Squid.

We've learned about a lot of fun cephalopods, like the octopus, squid, nautilus and cuttlefish!.
Let's learn a little bit about how their bodies work!

An Octopus Body is made up of interesting parts like the mantle, fins, siphons, tentacles, gills, beaks, fins suckers and even things like humans have, like eyes, hearts, arms and skin.

One of the most interesting parts is the Octopus Beak, also called the rostrum, as it is one of the only hard parts of the body for many octopuses.

The beak is made up of two parts, with an upper and lower part that fit together like scissors, and are controlled by jaw muscles just like humans.

It is mostly made up of some proteins mixed in with something called chitin (pronounced like kah-ee-tin), which is actually a kind of sugar.

This chitin is hardened so the beak is super sharp and is used by an octopus to break open the shells of animals they want to eat like clams.

(from: wikipedia - cephalopod beak)

Kid Facts - Blast from the past: Lemur Tree Frog