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Ecteinascidia turbinata

Rosana M. Rocha, Universidade Federal do Paraná (UFPR), Brazil

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Chenopodium album

By Enrico Blasutto, CC BY-SA 3.0

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Mentha aquatica

Arne Anderberg

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Micropterus dolomieu

Iowa DNR

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Calibrachoa parviflora

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Corbicula fluminea

Image courtesy of United States Geological Survey, via Wikimedia Commons public domain license.

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Rhizedra lutosa

Markku Savela

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Coregonus artedi

NOAA Photo Library

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Carex extensa

Arne Anderberg

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Physella acuta

Paul Fofonoff

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