▁may ▁be ▁done ▁using ▁mach in ery ▁such ▁as ▁sand ▁clean ing ▁machines ▁that ▁ra ke ▁or ▁s ift ▁the ▁sand ▁or / and ▁other ▁chemical s ▁such ▁as ▁oil ▁dispers ants . ▁This ▁beach ▁clean ing ▁may ▁be ▁done ▁by ▁profession als ▁company , ▁civ ic ▁organizations , ▁the ▁military ▁or ▁volunte ers ▁such ▁as ▁the ▁Great ▁Canadian ▁Sh or eline ▁C lean up ▁and ▁Marine ▁Conserv ation ▁Society . ▁ ▁Mechan ical ▁vs . ▁manual ▁clean ing ▁ ▁There ▁are ▁two ▁types ▁of ▁beach ▁clean ing - ▁mechanical ▁and ▁manual . ▁These ▁methods ▁are ▁also ▁referred ▁to ▁as ▁mechanical ▁gro oming ▁and ▁non me chan ical ▁gro oming . ▁Mechan ical ▁beach ▁clean ing ▁is ▁defined ▁as ▁l itter ▁and / or ▁organ ic ▁material ▁removal ▁that ▁re lies ▁on ▁the ▁work ▁of ▁automatic ▁or ▁push ▁mach in ery ▁that ▁ra kes ▁or ▁sie ves ▁the ▁most ▁super f icial ▁layer ▁of ▁sand . ▁Man ual ▁clean ing ▁involves ▁individuals ▁pick ing ▁up ▁tr ash ▁exclus ively ▁by ▁hand . ▁The ▁suggested ▁beach ▁clean ing ▁approach ▁incorpor ates ▁manual ▁and ▁mechanical ▁clean ing ▁as ▁this ▁combination ▁is ▁most ▁cost ▁effective ▁and ▁environment ally ▁sound . ▁ ▁Environment al ▁concerns ▁ ▁W rack ▁cover ▁and ▁b iod iversity ▁ ▁Mechan ical ▁clean ing ▁removes ▁organ ic ▁materials , ▁like ▁sea we ed , ▁alg ae , ▁and ▁plants , ▁alongside ▁anth rop ogen ic ▁waste , ▁such ▁as ▁pl astic ▁bott les , ▁cig aret te ▁but ts , ▁and ▁food ▁pack