I cannot create a summary of the requested article because the search results provided do not include the article titled "Seal and sea lion brains have evolved to support volitional control of vocal behavior and learning" from the journal Science, Volume 391, Number 6790, March 2026. The search results contain information on a similar topic - studies of seals' rhythmicity and vocal abilities - but not a specific article. which you mentioned. In order to create an accurate and factual summary, I need access to the full text of this particular article.