SERGIO HANQUET / LOOK AT SCIENCES / SCIENCE PHOTO LIBRARY SERGIO HANQUET / LOOK AT SCIENCES / SCIENCE PHOTO LIBRARY
Sea pen (Veretillum cynomorium) on the seabed, with polyps branching from its stalk. This anthozoan is a colonial organism, with different polyps specialised for functions such as plankton feeding, reproduction, and channelling water. Photographed in the Atlantic, off the Canary Islands.
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