▁have ▁occasionally ▁been ▁found ▁to ▁preserve ▁only ▁the ▁for efe et ▁( man us ) ▁impress ions . ▁Hend erson ▁showed ▁that ▁such ▁track ways ▁can ▁be ▁explained ▁by ▁sau rop ods ▁with ▁long ▁for el im bs ▁( such ▁as ▁mac ron ari ans ) ▁floating ▁in ▁relatively ▁shall ow ▁water ▁deep ▁enough ▁to ▁keep ▁the ▁shorter ▁h ind ▁legs ▁free ▁of ▁the ▁bottom , ▁and ▁using ▁the ▁front ▁lim bs ▁to ▁punt ▁forward . ▁However , ▁due ▁to ▁their ▁body ▁proport ions , ▁floating ▁sau rop ods ▁would ▁also ▁have ▁been ▁very ▁un stable ▁and ▁mal ada pt ed ▁for ▁extended ▁periods ▁in ▁the ▁water . ▁This ▁mode ▁of ▁aqu atic ▁lo com otion , ▁combined ▁with ▁its ▁inst ability , ▁led ▁Hend erson ▁to ▁refer ▁to ▁sau rop ods ▁in ▁water ▁as ▁" ti ps y ▁pun ters ". ▁ ▁While ▁sau rop ods ▁could ▁therefore ▁not ▁have ▁been ▁aqu atic ▁as ▁histor ically ▁dep icted , ▁there ▁is ▁evidence ▁that ▁they ▁preferred ▁wet ▁and ▁coast al ▁habit ats . ▁Sau rop od ▁foot print s ▁are ▁commonly ▁found ▁following ▁coast lines ▁or ▁crossing ▁flo od pla ins , ▁and ▁sau rop od ▁foss ils ▁are ▁often ▁found ▁in ▁wet ▁environments ▁or ▁inter ming led ▁with ▁foss ils ▁of ▁marine ▁organ isms . ▁A ▁good ▁example ▁of ▁this ▁would ▁be ▁the ▁massive ▁Jur ass ic ▁sau rop od ▁track ways ▁found ▁in ▁l ago on ▁depos its ▁on ▁Scotland ' s ▁Is le ▁of ▁Sky e . ▁ ▁H erd