▁color ful ▁sea ▁sl ug , ▁a ▁dor id ▁n ud ib ranch , ▁a ▁shell - less ▁marine ▁g ast rop od ▁m oll usk ▁in ▁the ▁family ▁Disc odor id idae . ▁ ▁This ▁species ▁was ▁previously ▁placed ▁in ▁the ▁genus ▁An is odor is ▁and ▁was ▁known ▁for ▁a ▁long ▁time ▁as ▁An is odor is ▁no bil is . ▁Sub sequently ▁it ▁was ▁known ▁as ▁Dia ul ula ▁no bil is . ▁ ▁This ▁animal ▁gives ▁off ▁a ▁pleasant ▁ ▁cit rus ▁sm ell ▁when ▁it ▁is ▁handled , ▁and ▁this ▁( al ong ▁with ▁its ▁yellow ▁color ation ) ▁is ▁what ▁is ▁responsible ▁for ▁the ▁common ▁name ▁" se a ▁le mon ". ▁Its ▁di et ▁includes ▁My c ale ▁ad ha er ens , ▁the ▁pur ple ▁scal lop ▁sp on ge ▁ ▁Distribution ▁This ▁species ▁occurs ▁in ▁the ▁Eastern ▁Pacific ▁Ocean ▁from ▁Al aska ▁to ▁B aja ▁California . ▁It ▁e ats ▁sp ong es . ▁ ▁Description ▁This ▁n ud ib ranch ▁is ▁variable ▁in ▁color , ▁from ▁a ▁very ▁pale ▁yellow ▁through ▁a ▁rich ▁yellow , ▁to ▁a ▁rather ▁dark ▁orange . ▁The ▁g ill ▁ro set te ▁is ▁t ing ed ▁with ▁white ▁at ▁the ▁tips . ▁ ▁The ▁d ors um ▁is ▁covered ▁in ▁t uber cles . ▁There ▁are ▁a ▁number ▁of ▁dark ▁sp ots ▁on ▁the ▁d ors um , ▁but ▁never ▁on ▁the ▁t uber cles ▁themselves . ▁These ▁dark ▁sp ots ▁vary ▁a ▁lot ▁in ▁number ▁from ▁one