Sub-Arctic invertebrates - Salmonography.com
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The planarian Polycelis coronata borealis

The planarian Polycelis coronata borealis is commonly found living on the underside of rocks in Alaska salmon streams. Photgraphed in situ during winter.

Class TurbellariaInvertebrateOrder Tricladida planariansPhylum PlatyhelminthesPlanarianPlatyhelminthesPolycelis coronata borealisSeacam underwater housingSpringbiosphereflatwormin situmarine lifenaturalworldnatureunderwaterunderwater photographyunderwaterphotowild