[[File:Jellyfish population trends by LME.jpg|thumb|275px|Kort over populationsdynamik for indfødte og invasive arter af [[gopler]]<ref>{{cite journal |doi=10.1007/s10750-012-1039-7 |title=Increasing jellyfish populations: Trends in Large Marine Ecosystems |journal=Hydrobiologia |volume=690 |issue=1 |pages=3–20 |year=2012 |last1=Brotz |first1=Lucas |last2=Cheung |first2=William W. L |last3=Kleisner |first3=Kristin |last4=Pakhomov |first4=Evgeny |last5=Pauly |first5=Daniel }}</ref>
{{legend|#E51A1D|Stigning (høj sikkerhed)}}
{{legend|#F1A341|Stigning (lav sikkerhed)}}
{{legend|#4DAF4A|Stabil/variabel}}
{{legend|#377CB5|Fald}}
{{legend|#CCCCCA|Ingen data}}]]
Videnskab Naturvidenskab