▁on ▁sp ong es , ▁usually ▁a ▁single ▁species , ▁storing ▁the ▁to x ins ▁the ▁sp on ge ▁contains , ▁in ▁order ▁to ▁d eter ▁their ▁own ▁potential ▁pred ators . ▁This ▁species ▁occurs ▁in ▁shall ow ▁waters ▁on ▁partially ▁exposed ▁re ef s ▁and ▁at ▁depth s ▁up ▁to ▁ 1 8 ▁metres . ▁ ▁References ▁ ▁Category : Ch rom odor id idae ▁Category : Fa una ▁of ▁Western ▁Australia ▁Category : G ast rop ods ▁described ▁in ▁ 1 9 2 4 <0x0A> </s> ▁Patrick ▁Scot ▁( fl . ▁ 1 6 2 0 ) ▁was ▁a ▁Scottish ▁official , ▁t utor ▁and ▁author . ▁ ▁Life ▁He ▁followed ▁James ▁VI ▁of ▁Scotland ▁to ▁England ▁on ▁his ▁acc ession ▁in ▁ 1 6 0 3 . ▁In ▁June ▁ 1 6 1 8 ▁he ▁was ▁engaged ▁in ▁the ▁work ▁of ▁raising ▁volunt ary ▁g ifts ▁for ▁the ▁supply ▁of ▁the ▁king ' s ▁ex che quer ▁by ▁threaten ing ▁persons ▁with ▁pro sec utions ▁for ▁us ury . ▁Six ▁years ▁later ▁( August ▁ 1 6 2 4 ) ▁King ▁James ▁I ▁wrote ▁a ▁letter ▁of ▁recommendation ▁on ▁his ▁beh alf . ▁ ▁Scot ▁apparently ▁acted ▁as ▁occas ional ▁t utor ▁to ▁Prince ▁Charles . ▁In ▁ 1 6 2 3 ▁and ▁ 1 6 2 5 ▁he ▁was ▁in ▁Amsterdam , ▁and ▁observed ▁the ▁separ at ist ▁churches ▁there . ▁ ▁Works ▁Scot ' s ▁position ▁res emble d ▁those ▁of ▁Joseph ▁Hall ▁and ▁Thomas ▁T ym me