Embryos develop from early spring to early summer. Planktonic larvae are long-lived. They feed and grow throughout summer, and in some cases continue to November. Settlement occurs from summer and peaks in early autumn (September-October), after which larvae metamorphose into a twinned ancestrula (the founding zooid). The ancestrula buds asexually to form young colonies which are approximately circular. Growth is perennial and will occur throughout spring and summer. The colony will tend to grow towards the youngest part of algal substrates at the base.
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