Children of the Sea is a Japanese manga series written and illustrated by Daisuke Igarashi. It was serialized in Shōgakukan's seinen manga magazine Monthly Ikki from December 2005 to September 2011. Shōgakukan has collected the series into five tankōbon volumes published between July 2007 and July 2012. The manga is licensed in North America by Viz Media, who serialized it online at SigIkki.com and released the five tankōbon volumes from July 2009 to June 2013.