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Sea Urchins
There are over 900 sea urchin species and they can be found in almost all parts of any ocean. They are often characterized by protruding spines from their test.
260 Questions
What can help the sea urchins To survive?
Sea urchins get their food at the bottom of the sea floor to eat dead fish.
Sea urchins move using their tube feet and spines on the underside of their body. they use their water vascular system. THis is where they pump water into their feet and when they touch the ground the water gets pushed out. This uses a lot of energy but only works slowly.
What color is a purple sea urchins spines?
The spiky spines of purple sea urchins range in colours depending on the exact species and the maturity of the urchin.
They can range from light blue, dark blue, royal blue, indigo, light purple, violet and dark purple.
Are there sea urchins in Fiji?
No. There are whales,dolphines,sharks,fishes of varieties,starfish,turtles,jellyfish etc in Fiji but no seals.
What is sticky on a starfish and sea urchins?
They release a gluey substance from their mouths, almost like saliva.
Starfish or sea stars are able to turn their stomachs inside out, the extended stomach hangs outside and engulfs food, partially digesting it. Thus it can feed on food larger than its mouth could handle.
Eventually, it and the food it is working on, is sucked or pulled back inside their body. The partially digested food then is passed along to a second stomach that completes the digestive process. They can also use their tube feet to open shells of calms and etc........
they also have a disaese called listen to yo teacher better OK.
The mouth and stomach of the starfish face towards the surface it's resting on. When the starfish finds a prey, it actually pushes its stomach outside of its mouth and the stomach eats the prey whole. Then it swallows its stomach.
Starfishes open there stomach inside out to suck in there predators and eat them.
their stomach which they turn inside out over their food
Starfish eat mollusks. When they find their dinner, they use their arms to break open the shell. After that, they extrude their stomachs out of their body and swallow the shellfish whole.
Starfish eat their food by turning there stomachs inside out and leaving the food there until digested.
Do sea urchins have predators?
Yes it does they are sea otters, crabs, and a type of fish.Yes it does they are sea otters, crabs, and a type of fish.
What ocean do Sea Urchins live in?
The zone sea urchins live in is nothing. They don't live in the ocean. Sea urchins live high up in trees. Their diet consists of elifunts and tiygurs. They are eetun by ants and spiydurs. Also sea urchins can fly. And they have x-ray vishun and freez breth. They also have jiunt manshuns and like to punch thing with thayr soopur strong fists. Also they are imurtel which means they can't die... evur. These are truly fasinateng kreechirs.
Do sea urchins eat dead coral?
No They Probably wouldn't because the sea urchin would prick the sea anemones i believe a sea anemone would sting it with its stingers on the end of its tentacles also some could just swim away and sea urchins are i believe among sea anemones
Are puffer fish and sea urchins related to each other?
Yes. Due to evolution, all living things have a common ancestor.
What are some similarities between sea stars and sea urchins?
both of them live in the ocean every where and they are echinoderms
How does a sea urchins protect themselves?
A sea urchin is covered with very long, quite sharp spines. I know a scuba diver who banged one with his knee and had to go in for surgery.
What is the difference between sand dollars and sea urchins?
The structural deference between them is that Sea urchins are more globular whereas sand dollars are flattened.
Unlike sea urchins, the sand dollars burrow themselves when threatened.
Sand dollars have anus opening at their back side whereas the sea urchins have it at the top.
Why do sea urchins cause problems for kelp forests?
They can cause problems for the kelp by sticking to it and feeding off there energy source. Also by not letting go and causing the kelp to sink to the bottom and not get the sun light it needs.
Do sea urchins produce pearls?
Sea urchins do not produce pearls in the same way that oysters do. While oysters create pearls from irritants by secreting layers of nacre, sea urchins have a different defense mechanism. They can form structures called "urchin pearls," which are calcified deposits, but these are not true pearls and are generally not valued like those from mollusks. Instead, sea urchin pearls are often irregular and not sought after in jewelry.
The different crabs that eat sea urchins include (but are not limited to): king crab, decorator crab, hermit crab and many more.
What are all fish star fish snails and sea urchins that live in an aquarium is an example of?
they are an example of Crestations, or they all live in the same areas of coastal waters, depending on the species of crestation.
~Gabby Johnson
