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Keywords from Image Description:
Haeckel Sacculina. Sacculina carcini Thompson Thompson adult female parasitizing Carcinus maenas showing externa and indicating network of interna Crop of the th plate from Ernst Haeckel's Kunstformen der Natur File Haeckel Cirripedia PDold Kunstformen der Natur derivative Sacculina carcini Carcinus maenas Crabs in art