The life cycle of a typical cnidarian involves an alternation between two main forms: the polyp and the medusa. The polyp is a sessile, asexual stage that attaches to a substrate, often reproducing by budding to form new polyps. In contrast, the medusa is the free-swimming, sexual stage that produces gametes through sexual reproduction. Fertilization results in a planula larva, which eventually settles and develops into a new polyp, completing the cycle.
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