Starfish

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.

A sea anenome is a plant, where as a starfish is an animal. Their diets differ and most anenomes can deliver a poisonous shock to another animal.

The oral spine surrounds the mouth of the starfish, so it should be located on the oral surface.

A starfish is actually an echinoderm. Its Its water vascular system and lack of segmentation, or even an exoskeleton composed of chitin, mean that it is not an arthropod in ANY sense...two completely different phyla.

they are called suckers on the ends of the tube feet. they are controlled by the water-vascular system in echinoderms, such as starfish.

Starfish can survive out of water for 5 days. Then, they die of dehydration. The only way a starfish gets on land is either by humans, or by the ocean itself. Starfish do manage to get back in the ocean, once the tide comes in. Sadly, many starfish don't make it, due to humans taking the little creatures home. Hope this helps! ............................................................If you dont want the starfish to die think of taking a bowl and scoop salt water out of the ocean into the bowl and put the starfish in it so it wont die.

The structure in an echinoderm that is a bulb like sac and pushes what is called the ampulla. It is connected to the radial canal of the water-vascular system. Each ampulla controls tube feet. The tube feet can extend when water pressure is increased by the ampulla being squeezed.

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Not unless you have some rare breed. They are a nuisance to mariners.

A starfish and a scale worm have a commensal relationship (commensal is a type of symbiotic relationship where the host benefits the stowaway but doesn't harm the host):

The sea star provides protection and food for the scale worm. The scale worm doesn't harm the sea star, therefore it is a commensal relationship.

Never they are very lazy they don't ever move where they are born they stay

The starfish takes care of it's young by placing it on it's back. So their prey can't get to the babys.

the stars are in the sky....

There are many places one can purchase Starfish earrings. One can purchase them online from Amazon or eBay or Etsy. One may also want to check out jewelry stores such as Claire's.

Starfish have been known to live as deep as 6000m

Here is my report you can use on crown-of-thorn starfish: A glance at the crown-of-thorns starfish explains how it got its name, as it is covered by thousands of spines. The spines are extremely sharp and are known to have a toxic reaction in humans. This animal is also the largest starfish in the world. People have sighted ones as big as 700mm in diameter from one tip to the other. The normal size for this starfish is between 250mm and 350mm. This starfish is quite beautiful when it is seen in its natural environment, as it is multi coloured ranging from purplish with red tip spines to having a green body with yellow tip spines. The crown-of-thorn starfish does not breathe but oxygen enters mainly by diffusion into the tube feet. The crown-of-thorns also has many other characteristics, which includes a mouth surrounded by short blunt spines, a stomach and hundreds of tiny feet that can be seen from under each arm. The crown of thorn's diet mainly consists of coral. Foods range from soft corals, including gorgonians (sea whips) to echinoids (sea urchins, starfish), clams and algae. They have also been observed to eat each other. The crown of thorns starfish is capable of going for relatively long periods of time without food. In the laboratory they have gone for as long as six to nine months. The crown of thorns starfish is a predator that eats other living animals. It is able to move across the coral reef using its suckers to find new prey. After finding a suitable coral it sucks away the polyp's tissue, leaving only a white coral skeleton. When the crown of thorns starfish is present in large numbers, it often eats together in groups called aggregations. In recent years crown of thorns aggregation have caused large scale coral destruction in other areas of the Pacific, but especially in the Great Barrier Reef. A female crown of thorn starfish releases millions of eggs each year but usually only a very small number survive to become mature starfish. However, if conditions are favourable, it may allow more larvae to settle on the coral reef and to survive. This then can lead to a population explosion on the reef. The outbreak of this starfish on the Great Barrier Reef has probably been the most extensive of all those recorded in the Indo-Pacific region. The last serious outbreak in the Great Barrier Reef occurred in 1991/1992. It was predicted to occur in 1994 but came 3 years early. These outbreak cause drastic destruction to the corals leaving some areas totally deserted. The crown of thorn starfish has no known predator so they thrive. Large aggregations of starfish will drastically alter the amount of hard coral on the reef. The starfish migrates from reef to reef as its food sauce runs out. Most hard corals will be eaten, though remnants are often left behind which can regenerate. Coral reefs can recover from the damage done by outbreaks, but it can take up to 20 years just to have a good coral cover again. That is why researchers are finding ways to prevent outbreaks in the first place.

A starfish's mouth is on the center of its bottom side. Its stomach is directly behind the mouth after a short esophagus and extends a bit down its five arms.

The names of the two stomach's in a starfish are the cardiac stomach and the pyloric stomach. The cardiac stomach begins the digestive process when a starfish eats their prey whole.

No they do not, they get their food from eating algae, seaweed and other small plants.

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Some may do. Other species browse on sea-floor sediments, whilst others again are predators on bivalves such as mussels.

every kind of starfish is found in salt water

The bottom of a starfish is covered with hundreds of flexible tubes, consisting of a stalk (podium) and pod (foot). Internal water pressure expands the feet, which use sticky chemicals to adhere to various surfaces. To release its hold, the pod retracts into the podium and exudes another chemical that dissolves the adhesive.

No, starfish do not have noses.

He lives under a rock. Next to the pineapple under the sea.