ary b dis ) ▁who ▁live ▁on ▁either ▁side ▁of ▁a ▁narrow ▁channel ▁of ▁water ▁in ▁The ▁Sea ▁of ▁Mon sters . ▁Should ▁a ▁ship ▁sail ▁too ▁close ▁to ▁her , ▁she ▁uses ▁her ▁six ▁heads ▁to ▁pl uck ▁off ▁crew ▁members ▁on ▁deck ▁and ▁dev our ▁them . ▁According ▁to ▁Clar isse ▁( d augh ter ▁of ▁A res ), ▁S cy lla ▁would ▁just ▁pick ▁up ▁the ▁whole ▁boat ▁and ▁cr ushed ▁the ▁boat ▁if ▁the ▁crew ▁hid ▁below ▁deck . ▁In ▁the ▁film ▁Per cy ▁Jackson : ▁Sea ▁of ▁Mon sters , ▁S cy lla ▁was ▁mentioned ▁by ▁Clar isse ▁to ▁have ▁e aten ▁Ich neut ae . ▁ ▁Sea ▁Ser pent ▁– ▁A ▁large ▁ser pent ▁that ▁lives ▁in ▁the ▁sea . ▁De imos ▁is ▁seen ▁r iding ▁one ▁in ▁The ▁Dem ig od ▁Files ▁story ▁" The ▁St olen ▁Ch ari ot ." ▁In ▁The ▁Last ▁Olymp ian , ▁a ▁sea ▁ser pent ▁was ▁seen ▁amongst ▁the ▁sea ▁mon sters ▁in ▁Ocean us ' ▁army . ▁ ▁Car th agin ian ▁Ser pent ▁– ▁A ▁giant ▁ser pent ▁with ▁a ▁dead ly ▁ven om ▁who ▁gu ards ▁the ▁entrance ▁of ▁Com mod us ' ▁la ir ▁in ▁Indian apolis . ▁ ▁Sir ens ▁– ▁D anger ous ▁bird ▁women ▁whose ▁sweet ▁songs ▁lead ▁many ▁sail ors ▁to ▁their ▁death s ▁on ▁the ▁j ag ged ▁rocks . ▁In ▁The ▁Sea ▁of ▁Mon sters , ▁they ▁almost ▁killed ▁An nab eth . ▁ ▁S ke leton ▁– ▁S ke