How do sea urchins eat?

Answer 1

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........

Starfish will spit out their stomach and wrap it round the food, eventually the stomach will be brought back in and will be passed onto a second stomach which will digest the food. If the stomach is already out of the starfish's body, and the food is bad or does not want to be eaten, they will spit the stomach out completely and grow a new one.

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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.

Answer 2

ANSWER:Yes. The Wolf Eel (a fish) is the sea urchin's main predator. Its strong jaws can chomp into the urchin without harm from the spines.

Other fish can pull out the spines one at a time and then crack the shell from underneath.

Answer 3

"Sea Monkey" is a fancifull name given to a type of shrimp that is commonly used by many fish breeders to feed to their young fish. Artemia salina was researched and developed/modified by scientists in America which now makes it slightly larger than the natural species and also adds "nyos" to its name making it Artemia salina nyos. They feed on tiny algae and yeasts which they catch with their tiny front legs/claws and stuff/fan into their mouths. To watch them eating use a good magnifying glass.

Answer 4

Starfish have a relatively broad range of diets, but are mostly carnivorous, preying on a wide variety of prey items from clams, to corals, to fish. Urchins are mostly herbivorous, feeding on marine algaes.

Answer 5

Both have their mouths (oral surface) at the bottom of their bodies. However, a sea urchin has teeth called aristotles lantern that scrapes algae off rocks, while a sea star ejects it stomach around the contents of its food to digest its prey.

Answer 6

With teeth on their bottoms. They use the teeth to pluck algea, seaweed, parts of other plants, and even parts of animals off to digest.

they also eat cookies

Answer 7

yes you can there is a part that you can eat but i think there is a part that is poisones.

Answer 8

they eat plankton

Answer 9

the face