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Starfish

Also known as sea stars, these echinoderms are 2,000 species strong and found in seas and oceans all over the world. They can vary in size from less than half an inch to more than four feet across.

1,388 Questions

How do starfish crawl?

The humble starfish (Asterias Forbesii) does not have a regular migratory route. It does however, floop. Where 'flooping' is the action of large numbers of starfish travelling along a similar path. The humble starfish (Asterias Forbesii) does not have a regular migratory route. It does however, floop. Where 'flooping' is the action of large numbers of starfish travelling along a similar path.

Do starfish have tube feet?

They have 1,0000 playing 2,000

Why was a crown of thorns placed on Jesus?

It was an attempt to humiliate and to mock him. He was tried and convicted of the charge of treason, he was accused of claiming that He was a king, though he said his kingdom was not of this world. Because of envy, various members of the Sanhedrin (the religious Jewish leadership of Israel in that day) falsely accused him of treason against Rome. Basically, they felt their position and prestige threatened by him. It was because of this charge he was found guilty in a joke kangaroo court, and as a result of being condemned for this charge, the Roman soldiers thought to mock him and inflict further suffering on Him by jamming a crown of thorns down on his head.

How many fins does a starfish have?

Most species have five arms. They do not have fins.

Are sea stars coelomates?

Think of it this way. In sea star development, the last stage is the late gastrula, as development continues, two pouches (the coelomis sacs) form by outpocketing from the endoderm surrounding the gut. These pouches become part of the coelom (body cavity), and the walls of the lateral pouches become the third germ layer, the mesoderm.

I got this information from my college lab manual, Inquiry Into Life, Thirteenth Edition

How are starfish sperm and eggs an adaptive advantage?

Starfish produce a large number of sperms and eggs as they breed with a process called free-spawning. To make the process of the gametes of opposite sexes meet, the starfish will release a chemical that attracts other starfish.

Why do starfish live in water?

StarfishNo. No known type of starfish can survive in freshwater. But Starfish can live on land or in other water. They can live some in the ocean, some not, and a lot in shallow cold water.

Do starfish eat each other?

Yes, Starfish can and do eat each other sometimes.

What is the length of a cushion star?

The lengh of a cushion starfish is 25cm. Sea Stars have remarkable regenerative powers, when attacked and damaged by predators they are able to grow new arms. They usually have five arms but have been found with 4 or 6 arms, this may be because more than one arm has been damaged at one time!

Sometimes small parasitic limpets can be found on the underside of arms which can deform the arms.

They possess a cleverly evolved arsenal of hydraulic tube feet connected to an elaborate water-vascular system that encircles the animal's mouth and extends via five radial canals down the centre of each arm.

Their mouth is underneath, but their prey is absorbed outside their mouths by forcing out their digestive organs from their stomach.

Sea Stars are carnivores and feed on almost any food including molluscs, worms, detritus and each other!

Some sea stars like the crown of thorns can be venomous.

Scientific Name:

Culcita novaeguineaeSpecies:

Sea Stars (Oreasteridae)Other names:

Starfish, Stella Marina Cuscino, Tropical Sea Star, Tropical Starfish, Cushion Star, Cushion Starfish, Pin-Cushion Star, Pin-Cushion Sea Star, Pin-Cushion Starfish.

What to do if you find a starfish?

Dry it. You can air dry it but it will look shrivelled and brown, but if you buy a large pack of washing soda crystals, put a couple of inches in the bottom of a plastic box, put the starfish flat on the crystals then cover the starfish with more crystals until they are at least two inches (5cm) above the highest part of the starfish... DO NOT put an air tight lid on, but a few sheets of kitchen towel held imminent with string to allow water vapours to escape.. Put away in a warm dry place for 8 weeks. Starfish will be dried out but retain it's shape and colour.

How are starfish and plants relative?

They both have to have water to survive. A plant has to have water and if the starfish gets taken out of water for a long period of time it will die.

How does a starfish obtain its nutrition?

Starfish eat clams, oysters sand dollars and mussels to get energy.

What does a starfish feel like and what does a starfish do when you touch it?

Other animals cannot inform us of how they feel, nor of why they feel that way.

We do not even know that they have 'feelings', but - having them ourselves - we think thay might. ----- Ooooops ----- It appears that I misunderstood the questioner's use of the word "feel".... they meant to the touch, and not emotionally.

All I can say is that the few I encountered as a child on the Atlantic coast of Ireland were more firm than a fish, but less firm than a crab or lobster.

They also had a rough texture, a bit like sandpaper.

But that is not exactly a scientific sample - about a dozen starfish in the middle of the 1950s in one bay. :-)

What is example of echinoderms?

Echinoderms can only be found in water, as they are aquatic.

Some characteristics of Echinoderms are:

Hard Skin, have arms or spines, have 5 body parts, organs found towards centre of body.

Examples: Star Fish, Sea Cucumber, Sea Urchin

How many body parts does a starfish have?

Starfish have an endoskeleton comprised of many little bones.

Since the term starfish encompasses a whole host of different creatures with different numbers of arms, I presume the answer isn't well defined. All the skeletons I've seen have a huge number of intricate bones, but I haven't seen that many.

Term bones doesn't 'easily' apply to the phylum echinodermata. What solid spines and plates they have are part of their skin, and what gives their bodies their rigidity is a 'water vascular system' or a Hydro-skeleton' or a 'pneumatic skeleton', which depends on water pressure to make it function.

Hows does a starfish obtain water?

They live in the ocean so they stay wet. They are always surrounded by water and they absorb it. If they are above water for too long then they dry out.

How long is a starfish pregnant for?

Never, when the lose a leg it falls of and then in a couple of days their is a new starfish or sea star. Then they grow their arm back.The have no genders or brains or hearts or even blood!

Do starfish have suctioncups?

yes starfish do have suction cups but they are only so small that they can't be seen with the human eye.

Where do sea stars eat from?

well from what Ive researched fish cant eat starfish because starfish are poisonous its kind of ironic because a turtle can eat jellyfish and jellyfish are also poisonous but i guess nature has its ways

Are starfish sponges?

Yes, starfish do eat sea urchins.

They wrap themselves around the sea urchin and evert their stomach against it to dissolve away the flesh and shell. Eventually when the flesh and shell is dissolved by the starfish stomach acids, the starfish eats the inside of the sea urchin.

Why are starfish in danger of extinction?

Yes, some species of starfish are considered to be dangerous. The crown of thorns, sun star, spiny sun star, and the leather star are all poisonous starfish. They can be harmful and even deadly to humans.