um ▁carbon ate ▁that ▁contains ▁many ▁organ ▁pipe - like ▁tub es . ▁ ▁On ▁each ▁t ube ▁is ▁a ▁series ▁of ▁poly ps ▁which ▁each ▁have ▁eight ▁fe ather - like ▁tent acles . ▁ ▁These ▁tent acles ▁are ▁usually ▁extended ▁during ▁the ▁day , ▁but ▁will ▁swift ly ▁withdraw ▁with ▁any ▁sort ▁of ▁disturb ance . ▁ ▁The ▁ske leton ▁is ▁a ▁bright ▁red ▁color , ▁but ▁is ▁typically ▁obsc ured ▁by ▁the ▁numerous ▁poly ps , ▁which ▁are ▁green ▁or ▁gray ▁in ▁color . ▁ ▁In ▁size , ▁colon ies ▁can ▁reach ▁up ▁to ▁a ▁meter ▁across , ▁while ▁the ▁individual ▁poly ps ▁are ▁typically ▁less ▁than ▁ 3   mm ▁wide ▁and ▁a ▁few ▁mm ▁long . ▁ ▁They ▁are ▁restricted ▁to ▁shall ow ▁waters ▁and ▁tend ▁to ▁live ▁in ▁shelter ed ▁areas ▁where ▁they ▁eat ▁pl ank ton . ▁They ▁are ▁close ▁relatives ▁to ▁other ▁soft ▁cor al ▁and ▁sea ▁fans . ▁This ▁species ▁is ▁sometimes ▁kept ▁in ▁aqu ari ums , ▁but ▁is ▁temper amental , ▁and ▁is ▁difficult ▁to ▁maintain . ▁ ▁Notes ▁ ▁Category : Al cy on ace a ▁Category : Cor als ▁described ▁in ▁ 1 7 5 8 ▁Category : T ax a ▁named ▁by ▁Carl ▁Lin na eus <0x0A> </s> ▁Kon tr ar it am ▁( ; ▁trans . ▁C ounter rh ythm ) ▁was ▁a ▁former ▁Y ug oslav ▁ 2 ▁T one / ska ▁band ▁from ▁Nov i ▁Sad . ▁ ▁History ▁ ▁The ▁band ▁was ▁formed ▁in ▁Aut