The Legend of Zelda: Ocarina of Time Tips

Fishing Tip
Put on your hover boots and take a baby step onto the water so you are at the edge. As you step out, cast your line and if timed correctly, you'll sink as your line lands. You will be knee-deep in water and will be able to move around in the pond.

If you really want to get up close to the fishies, put on your Iron Boots and Zora Tunic. Now, you will sink to the bottom and will be able to see what you catch.