Editing Plankton (section)

===Gelatinous zooplankton===
[[File:Jellyfish swarm.jpg|thumb|upright=1|left| Jellyfish are gelatinous zooplankton.<ref name=Hays2018>{{cite journal |doi = 10.1016/j.tree.2018.09.001|title = A Paradigm Shift in the Trophic Importance of Jellyfish?|year = 2018|last1 = Hays|first1 = Graeme C.|last2 = Doyle|first2 = Thomas K.|last3 = Houghton|first3 = Jonathan D.R.|journal = Trends in Ecology & Evolution|volume = 33|issue = 11|pages = 874–884|pmid = 30245075| bibcode=2018TEcoE..33..874H |s2cid = 52336522|url = https://pure.qub.ac.uk/en/publications/a-paradigm-shift-in-the-trophic-importance-of-jellyfish(6158fa15-32f8-4167-9574-dbc08266b588).html|author1-link = Graeme Hays}}</ref>]]
{{main|Gelatinous zooplankton}}

[[Gelatinous zooplankton]] are fragile animals that live in the water column in the ocean. Their delicate bodies have no hard parts and are easily damaged or destroyed.<ref>{{aut|Lalli, C.M. & Parsons, T.R.}} (2001) ''Biological Oceanography''. Butterworth-Heinemann.</ref> Gelatinous zooplankton are often transparent.<ref>{{aut|Johnsen, S.}} (2000) Transparent Animals. ''Scientific American'' '''282''': 62–71.</ref> All [[jellyfish]] are gelatinous zooplankton, but not all gelatinous zooplankton are jellyfish. The most commonly encountered organisms include [[ctenophore]]s, [[Jellyfish|medusae]], [[salps]], and [[Chaetognatha]] in coastal waters. However, almost all marine phyla, including [[Annelida]], [[Mollusca]] and [[Arthropoda]], contain gelatinous species, but many of those odd species live in the open ocean and the deep sea and are less available to the casual ocean observer.<ref>{{aut|Nouvian, C.}} (2007) ''The Deep''. University of Chicago Press.</ref>

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