▁from ▁dig estion , ▁and ▁how ▁they ▁adapt ▁to ▁their ▁new ▁position ▁in ▁animal ▁cells ▁without ▁the ▁memb ran es ▁that ▁would ▁control ▁their ▁environment ▁in ▁the ▁alg ae . ▁However ▁it ▁is ▁achieved , ▁kle ptop last y ▁is ▁an ▁important ▁strategy ▁for ▁many ▁gener a ▁of ▁P lac ob ranch ace a . ▁ ▁One ▁species ▁of ▁E ly s ia ▁fe eds ▁on ▁a ▁season ally - calc ifying ▁alg a . ▁ ▁Because ▁it ▁is ▁unable ▁to ▁pen et rate ▁the ▁calc ified ▁cell ▁walls , ▁the ▁animal ▁can ▁only ▁feed ▁for ▁part ▁of ▁the ▁year , ▁re lying ▁on ▁the ▁ing ested ▁ch lor op last s ▁to ▁surv ive ▁whilst ▁the ▁food st uff ▁is ▁calc ified , ▁until ▁later ▁in ▁the ▁season ▁when ▁the ▁calc ification ▁is ▁lost ▁and ▁the ▁gra zing ▁can ▁continue . ▁ ▁Sac og loss ans ▁can ▁also ▁use ▁anti - her b iv ory ▁comp ounds ▁produced ▁by ▁their ▁alg al ▁food st uff s ▁to ▁d eter ▁their ▁own ▁would - be ▁pred ators , ▁in ▁a ▁process ▁term ed ▁kle pt och em istry . ▁ ▁This ▁may ▁be ▁achieved ▁by ▁converting ▁alg al ▁met abol ites ▁to ▁to x ins , ▁or ▁by ▁using ▁alg al ▁p ig ments ▁for ▁cam ou fl age ▁in ▁a ▁process ▁term ed ▁nut r itional ▁hom och rom y . ▁ ▁Ox yn o ace a ▁▁ ▁Ar ound ▁ 2 0 % ▁of ▁sac og loss an ▁species ▁bear ▁a