Starfish

Starfish are composed primarily of water and have a network of vessels that circulate seawater throughout their bodies. They also have a hard calcium carbonate exoskeleton that provides structure and protection. Additionally, they have a unique water vascular system that helps them move and feed.

The tube feet of a sea star move through a hydraulic system known as the water vascular system. This system uses water pressure to control the extension and retraction of the tube feet, allowing the sea star to move and manipulate objects.

Urchins because they both cling to rocks members of the urchins are barnacles starfish urchins the spiked

Both systems use pressure to create movement: in a car, it is hydraulic pressure in the braking system that activates the brakes, while in a sea star, the water vascular system uses hydraulic pressure to operate tube feet for movement and feeding. Additionally, both systems rely on fluid to generate force and control movement within the system.

Starfish filter sea water to extract nutrients and oxygen. They use their tube feet and specialized structures called podia to create water currents that bring in food particles and oxygen from the water for them to consume. This feeding behavior helps them survive and grow.

Crown-of-thorns starfish populations can be controlled through manual removal by divers, injecting them with vinegar or bile salts which are toxic to them, and introducing their natural predators such as the giant triton snail. Implementing these methods in combination with regular monitoring can help manage crown-of-thorns starfish populations effectively.

The crown-of-thorns starfish is found in the Indo-Pacific region, including the Great Barrier Reef in Australia, the Red Sea, and parts of the Pacific Ocean. They typically inhabit coral reefs and rocky areas, where they feed on coral polyps.

Yes.

The scientific name for a sand sifting sea star is Astropecten polyacanthus.

The scientific name for necklace sea stars is Astropecten polyacanthus.

The scientific name of a cushion starfish is Culcita novaeguineae.

The scientific name of a spiny starfish is "Marthasterias glacialis."

Starfish belong to the kingdom Animalia, phylum Echinodermata, class Asteroidea. Within the class Asteroidea, there are around 1,600 species of starfish that are further classified into different orders, families, genera, and species.

asterios forbesii

Well yes but it has more than that

Starfish belong to the species of phylum Echinodermata. Starfish are found in the oceans around the world with a large population in the Pacific and Indian oceans.

Remember that taxonomic classification has eight main levels:

Domain

Kingdom

Phylum

Class

Order

Family

Species

All starfish belong to the domain Eukarya, the kingdom Animalia, the phylum Echionodermata, and the class Asteroidea. After this they diverge into different orders, families, and species. There are around 2000 species of starfish overall, each with a different two-part scientific name.

Asterias forbesii

It is a story of a old man on the beach who sees a young boy walking along throwing starfish back in the ocean. The man tells the boy there are miles of stranded starfish, he won't make a difference. The boy throws another one back in the ocean and tells the old man that it made a difference to that one. It symbolizes doing what you can with the problem in front of you. Look at Mother Teresa, she went out into the city of Calcutta all alone one day in the late 1950's and helped one poor old dying man. Years later, she had started an entire religious order that has helped thousands. Do we still have old, dying poor people? Yep. Did Mother Teresa make a difference? She sure did to thousands of people over the course of her life. Start with the people right in front of you: your family, your neighbors, your co-workers. Treat them as you would treat Our Blessed Lord because each on of them, as Mother used to say, is Jesus in disguise. And you will make a huge difference, even if it is only one person. You have to start somewhere.

Ok, the basic problem you have is that you get confused between what a foot is and what a suction cup is.

Lets take the 5 pointed starfish, each 5 points is a foot. on one foot there is lots of suction cups.

but the answer to the question is, yes but they have more than one they have 1 million+ between 5 feet in a 5 pointed starfishes case

Sea stars can regenerate (can grow any part as long as the central disk is still partially in tact), has skin containing calcium carbonate for protection, can see light and dark (thanks to eyespots on each arm), to eat it puts its stomach into a mussel or clam shell to digest then slurp up, tube feet with strong suction to help eat clams and mussels, and pedicellaria (microscopic pinchers on skin) to keep clean, water vascular system (aids gas exchange, digestion, movement, and movement of flud throughout the body).

A starfish as an average of 36 chromosomes.

You can't exactly catch a star. It is a ball of super hot gas, swelled to an extremely big size. You can't exactly catch a star. It is a ball of super hot gas, swelled to an extremely big size. Carefully and then put it in your pocket, never let it go.

In kelp forests