Talk:Mermaid General/@comment-24442375-20140207232309/@comment-24419079-20140208001211

Two possible answers.

1. Meia gave Luka the Ball of Guidance to keep in chapter two (fact). This let him breathe underwater because he still has it.

2. A wizard did it (http://tvtropes.org/pmwiki/pmwiki.php/Main/AWizardDidIt)