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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 big are starfish when they are born?
Starfish can grow to be huge, some starfish have been known to grow 20 feet, and some can be about the size of a school classroom. Some live in Abyss' so its possible that they can be bigger.
^^ and yes this is legit because you learn it if you study biology
No, they circulate the water that comes in through the madreporite through their water vascular system, then it exits through their feet providing suction for to latch onto things. (example, rocks)
What are a starfish's main senses?
Starfish are sensitive to touch, light, temperature, orientation and the status of the water around them. The tube feet are sensitive to chemicals, enabling the starfish to detect odor sources such as food.
Why are starfish said to have pentaradial symmetry?
because all of their legs and things are centered around a middle point :)
How does a starfish move around?
The starfish life cycle starts anew when eggs and sperm are released into the ocean and fertilization occurs. Starfish larvae result from fertilization of the eggs. The larvae later undergo metamorphosis and eventually turn into adults.
What is a scientific name for a starfish?
Starfish belong to the class Asteroidea. The scientific name of a particular species consists of the Genus name followed by the species name. An example for starfish would be Asterina miniata (where Asterina is the Genus name and miniata is the species name).
Starfish have many special features. Here are just a few: * They regenerate lost parts of themselves to a point that it's amazing. Sometimes, if you cut a sea star in half, you'll get two sea stars. * They are one of the very few animals that use hydraulic to move around. The strength a sea star has in the 3 arms it uses to open molluscs for food, are often "rechanneled" hydraulically from the two resting arms. * Most of the life on this earth is parasitic (in numbers of species). There is not one parasite in the entire of Phylum Echinodermata.
They have 5 'legs', like a five pointed star, and have a sort of fuzzy, bumpy flesh. Having held one before, I know that they come in many colors, such as purple.
Characteristics of a Starfish include:
1. Starfish bodies are highly flexible.
2. The starfish has no eyes, ears or nose and rely solely on their legs for almost everything.
3. Most starfish feed on slow-moving or stationary animals, such as: oysters, snails and clams.
What surface is the madreporite of a starfish visible?
aboral!!!!!
i hate stupid people who get on here and answer things wrong!!!
What is the Reproduction method of a starfish?
sexaully and asexually. male and female starfish release gametes into the evironment hoping that they'll find another to fertillize.
How do starfish relate to other sea animals?
well if you had said what are star fish relitives i would had said sea urchens and brittle stars so all i have to say to this answer is that there are diffrent kinds of star fish. they only relate to sea urchens brittle stars and they sea star family. when i say sea se family i mean like some stars have 10 points while others have 5 or 4. I hope this was helpfull if not i understand
Starfish can either spawn together with eggs and sperm or they can reproduce by themselves. A new starfish can form from a separated part which is considered reproduction. They don't exactly have mating behaviors though.
Why do starfish live in groups?
well starfish like to be in a group so they are not on there own when somethink is trying to eat them..?
They make up the skeleton and protect internal structures.
Starfish eat clams, mussels, oysters, and other shelled creatures. Sometimes they eat hermit crabs and very rarely tiny ocean bugs or parasites.
Some species take advantage of the great endurance of their water vascular systems to force open the shells of bivalve mollusks such as clams and mussels, and inject their stomachs into the shells. Once the stomach is inserted inside the shell it digests the mollusk in place. The cardiac stomach is then brought back inside the body, and the partially digested food is moved to the pyloric stomach. Because of this ability to digest food outside of its body, the sea star is able to hunt prey that are much larger than its mouth would otherwise allow including arthropods, and even small fish in addition to mollusks.
Some starfish have been shown to live for several weeks without food under artificial conditions it is believed that they may receive some nutrients from organic material dissolved in seawater.
starfishes eat any animal that is slow so it can not attack
starfish eat corals, kelp,clam, and oyster
Starfish eat mussels, clams, oysters, snails, sponges, sea anemones, coral or other sea stars.
I live by the ocean in BC/while walking my dog we found a star fish in a pool
Just waiting to get caught by an eagle or seagull ( it is a nice size about 10-12"
across and purple in colour) yes! I rescued it I am only two minutes from beach..
It is now resting in a large pool of seawater in my backyard, I would like my grand children to see it when they come out for Easter dinner on Sunday ( I am going to go back and get it some clams when the tide goes out a bit more) and then on Sunday they can take it back to its rightful home and let it go, when the tide is in..
It is such a pretty colour a deep purple, At first my dog thought it was a new play toy !!NoT !!....
I know nothing about these sea creatures,,,So any in put would be good!!
Thanks
the starfish eats clams usually and other small creatures
Starfish are carnivores (they eat meat)
Like clams, oysters, and fish
Sometimes starfish eat other starfish.
What do starfish need for survival?
I'm not a starfish expert or anything. I know that they eat clams. the center of the Seastar is its mouth. They're kinda like octopuses i guess. I'm not sure if that answers you question though.
How does having radial symmetry help a starfish survive?
It doesn't, really. Starfish are remarkable animals for their strange characteristics, but radial symmetry doesn't have significant benefit to the survival of the animal.
