Editing Antarctic krill (section)

===Filter feeding===
{{Main|Filter feeder}}Antarctic krill directly ingest minute [[phytoplankton]] cells, which no other animal of krill size can do. This is accomplished through [[filter feeding]], using the krill's highly developed front legs which form an efficient filtering apparatus:<ref name="Kils832">{{cite book|title=On the biology of krill ''Euphausia superba'' – Proceedings of the Seminar and Report of Krill Ecology Group|author=Uwe Kils|publisher=[[Alfred Wegener Institute for Polar and Marine Research]]|year=1983|editor=S. B. Schnack|series=Berichte zur Polarforschung|issue=Special Issue 4|pages=130–155|chapter=Swimming and feeding of Antarctic krill, ''Euphausia superba'' – some outstanding energetics and dynamics - some unique morphological details}}</ref> the six [[thoracopod]]s (legs attached to the [[thorax]]) create a "feeding basket" used to collect phytoplankton from the open water. In the finest areas the openings in this basket are only 1&nbsp;μm in diameter. In lower food concentrations, the feeding basket is pushed through the water for over half a metre in an opened position, and then the algae are combed to the mouth opening with special [[setae]] (bristles) on the inner side of the thoracopods.[[File:Krillicekils.jpg|thumb|Antarctic krill feeding on [[ice algae]]. The surface of the ice on the left side is coloured green by the algae.]]