Atlantic Harbor Seal (Phoca vitulinai) - exhibits tropism in this photograph because it is swimming over to the external stimulus of its meal of herring fish being inserted into its tank environment.
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Rockhopper Penguins (Eudyptes chrysocome) - exhibiting tropism in this photograph by running across the rock in their enclosure to gather near the food that they have detected and get fed.
42.35889, -71.05083
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