they have bones and move them with nervs.
ps.
(LOL! im doing this for homework too! ^-^ lolz mi mame is ari :v
pss.
ermm dunt use tht answer ... i dun kno yet either...
psss.
jk go head nd use it... .. im going to wikipedea tho :v
tube feet
sea lilies and feather stars
sea lilies and feather stars
Crown of thorns sea stars primarily feed on coral polyps. They use their numerous arms to pry open coral polyps and digest the tissue inside. This feeding behavior can have devastating effects on coral reefs if their populations are not controlled.
Starfishes, or sea stars, are members of the do-all-starfishes-or-sea-stars-have-five-armsAsteroidea. Their bodies consist of a central disk from which radiate from five to more than twenty arms or rays
Sea stars do not sleep in the same way animals with brains do. They are known to be less active at night and may slow down their movements when resting. Sea stars are constantly filtering water and moving around even when they appear to be still.
The size of a starfish or sea star can vary. There are over 2,000 different species of sea stars that have 5, 10, 20, 40 or more arms.
Includes: Sea Stars, Sea Lillies, Sea Urchins, Sea Cucumbers, Brittle Stars
well, they basicly grow back like human arms. it's the same format.
sea stars have NO brains
Sea stars are not fish so no, it is not.
sea stars are flexible. sea stars do not have any bones. so they are very flexible:)