▁by ▁many ▁hex ag onal ▁cyl ind ers ▁within ▁the ▁sp ines , ▁which ▁" perform ▁much ▁more ▁efficiently ▁than ▁man - made ▁optical ▁fib res ". ▁ ▁Fe eding ▁ ▁A ph rod ita ▁are ▁typically ▁sc av engers . ▁However , ▁A ph rod ita ▁ac ule ata ▁is ▁an ▁active ▁pred ator , ▁feed ing ▁primarily ▁on ▁small ▁c rab s , ▁herm it ▁c rab s ▁and ▁other ▁pol ych a ete ▁w orm s ▁including ▁P ect in aria ▁and ▁L um br icon ere is . ▁ ▁Species ▁Species ▁recognized ▁by ▁the ▁World ▁Register ▁of ▁Marine ▁Species : ▁ ▁A ph rod ita ▁aby ss alis ▁Kirk ega ard , ▁ 1 9 9 6 ▁A ph rod ita ▁ac ule ata ▁Lin na eus , ▁ 1 7 5 8 ▁A ph rod ita ▁ac umin ata ▁E hl ers , ▁ 1 8 8 7 ▁A ph rod ita ▁alta ▁Kin berg , ▁ 1 8 5 6 ▁A ph rod ita ▁ann ul ata ▁P enn ant , ▁ 1 7 7 7 ▁A ph rod ita ▁a ph rod ito ides ▁( Mc Int osh , ▁ 1 8 8 5 ) ▁A ph rod ita ▁arm if era ▁Moore , ▁ 1 9 1 0 ▁A ph rod ita ▁aud ou ini ▁Cast eln au , ▁ 1 8 4 2 <' small > ▁A ph rod ita ▁austral is ▁B air d , ▁ 1 8 6 5 ▁A ph rod