Sea pen
Sea pens are marine cnidarians belonging to the superfamily Pennatuloidea. They are fleshy colonial organisms anchored to the seabed, with tiny polyps embedded in a soft matrix.
Sea pens are marine cnidarians belonging to the superfamily Pennatuloidea. They are fleshy colonial organisms anchored to the seabed, with tiny polyps embedded in a soft matrix.
Sea pens are marine cnidarians belonging to the superfamily Pennatuloidea. They are fleshy colonial organisms anchored to the seabed, with tiny polyps embedded in a soft matrix.
Source: Wikipedia "Sea pen" · CC BY-SA 4.0
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