Amphipod Under Arctic Sea Ice

Several species of amphipod like this one, Gammarus wilkitzkii, live permanently within Arctic sea ice. These animals are endemic, meaning they only live here. They acclimate to a wide range of salt levels in the water using a physiological response called osmoregulation.

Tags: 
NOAA, Arctic, Polar regions, Crustaceans, Adaptations
Several species of amphipods acclimate to different water salinities using osmoregulation<div class='credit'><strong>Credit:</strong> Several species of amphipods acclimate to different water salinities using osmoregulation</div>
Credit: S. Harper, UAF, Hidden Ocean 2005, NOAA.

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