Planula
A planula is the free-swimming, flattened, ciliated, bilaterally symmetrical larva of a hydrozoan cnidarian. It navigates through the water until it reaches a hard substrate where it anchors and grows into a polyp. Planulas are unable to feed themselves.
Related Topics:
Ciliated - Bilaterally symmetrical - Larva - Hydrozoan - Cnidarian - Polyp
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