Zora Egg

Four Zora eggs, which were mysteriously laid by Lulu, were stolen by the Gerudo Pirates in Majora's Mask. Go to their base/hideout and get them back by defeating a Pirate miniboss for each of the four. The eggs can be carried in an empty bottle for easy transport. Make sure the Pirate guards are avoided at all costs, or they will toss you out and you will have to navigate the hideout from the beginning. The final three were placed with several sea monsters, and Link must transform into Mikau to retrieve them from the monsters caves. Once they are all collected, take them to the Observatory/Lab. Once you place them all into the tank together, the eggs will hatch and the baby Zoras will teach Link a new song called the New Wave Bossa Nova, which will awaken Lulu's voice and lead you to the Great Bay Temple.