Assertion: krill | /r/AtLocation | seasonal sea ice
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text: They will drop to 80-100m or more (260-330 feet) in the daytime by "parachuting" down, slowly sinking with outspread limbs and then swim back up to within 10m (33 feet) of the surface at night to where the phytoplankton can be found and when predators are relatively less of a threat.by using their muscle as a reserve, the krill shrink in the process, this happens over the winter months when the krill are under seasonal sea ice and there is little or no photosynthesisbackwards lobstering takes only 55 milliseconds (0.055s) from stimulus (optical) to triggering of the escape responsethey can do this several times in a season.