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That's a great question. Around here, they are called starfish and scientists call classify them as echinoderms not fish. There's a great wikipedia site on sea stars (super cool pictures): http://en.wikipedia.org/wiki/Starfish but it doesn't answer your question. This website states they breathe throught their feet: http://www.conservapedia.com/Starfish Interestingly, they have no brain.
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DevinSea stars use their water vascular system, which helps to circulate oxygen throughout their body. Oxygen is absorbed directly from the seawater through their tube feet and then transported to the various tissues and organs. This system allows sea stars to obtain the oxygen they need for respiration.
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What are baby sea stars called?
Baby sea stars are called "larvae" or "planktonic juveniles" before they mature into adults.
Do all cells use oxygen to produce energy?
No cell produces oxygen; oxygen is made in the hearts of stars. Plant cells responsible for photosynthesis, liberateoxygen from carbon dioxide molecules. Plants use the carbon to made carbohydrates (with the hydrogen from water) and the oxygen is the waste product.
What are the daily habits and behaviors of sea stars?
Sea stars are slow-moving animals that primarily feed on mollusks, crustaceans, and small fish. They typically use their tube feet and suction-cup-like structures to move around and capture prey. Sea stars also have a unique feeding mechanism where their stomach can be pushed out of their body to digest food externally.
How do stars twinkle in the absence of oxygen?
Stars twinkle due to the Earth's atmosphere and its turbulence, which causes the light from stars to refract and flicker as it passes through. The twinkling effect is not related to the presence of oxygen specifically, so stars can still appear to twinkle in the absence of oxygen.
Are feather stars and sea lilies the same thing?
Feather stars and sea lilies are related but not the same. They both belong to the class Crinoidea, but feather stars can crawl and swim while sea lilies are sessile, anchored to the seafloor by a stalk.
