Sea and sky
A modern American coinage likely inspired by the Hawaiian name Kailani. It combines the elements 'kai', meaning sea, and 'lani', meaning sky or heavens, often interpreted as 'majestic sea'.
Less common today
Kailahni isn't in the latest US Top 1000. It last peaked at #9,711 in 2019.
US births per 5-year period, 1990βpresent (SSA data).