Reaching the Watering Hole
Play through the game until you complete the "Over the Water" objective. Follow the arrows through a series of narrow walkways until you reach a large steam vent. Melman the giraffe will come crashing down from the sky, and after a short scene you'll be controlling Melman as he rides on top of a large boulder. Maneuver the boulder through the level using the Wiimote and close all of the steam vents. It's possible to fall off a ledge during this section, but you'll just start over where you fell off without losing any progress. You'll reach the Watering Hole after all vents have been closed.
Talking to the Penguins and Getting the Camera
Turn right from your starting point in this level and you'll see a monkey on a rock and a large "Now Hiring" sign in the distance. Approach the sign and some penguins will ask you to find wire cutters for them. Turn right after talking to the penguins and keep going forward until you see Marty the zebra. Keep walking a bit further and you'll receive a camera. Go back to Marty and he'll ask you to take pictures of five different animals in this area.
Taking Five Pictures
Bring out your camera when you see a rhino, elephant, monkey, Nana and Moto Moto. There is only one rhino, elephant and monkey in this small enclosed area and they're easy to find. Moto Moto is standing on a rock by the water and he'll be posing to impress the female hippo in the area, while Nana will be standing on a hill past the elephant. Marty will try to get in every picture, but keep zooming the camera in until you see a "Perfect!" message indicating that the subject is centered to get the pictures.
Finding the Wire Cutters
Watch the short cinema scene after you successfully take all five pictures, then walk straight ahead to talk to the rhino. He'll mention that he's afraid of bees. You'll see a beehive straight ahead after you talk to the rhino, so walk up to it and another scene will occur showing that the bees follow you around. Walk back over to the rhino. He'll get scared and will smash through the boulder that was behind him. Go through this opening and collect the red wire cutters that are straight ahead of you.