I will tell you the ones I know about because you didn't specify what game. In Ocarina of Time: * Bombchu Game Shop in Hylian Castle. * Tree next to entrance of Gerudo Valley. * Another in Gerudo Valley behind the waterfall, get cucco (chicken) to take you there. * Frogs in pond in Zora's river (need to play ocarina to get). * Another heart when you get in Zora's fountain where Lord Jabu-Jabu used to be, there is a heart there. * Skull kids in Lost Forest next to Kokiri Forest. * Graveyard behind the Kakariko Village, visit as adult need magic beans. * Inside back building with cows in Lon Lon Ranch, need to move boxes and crawl in as a child. * Top of chimney tower on Lake Hylia, needs magic beans visit as adult. * Death Mountain crater, enter through