The 5-Banana Coins are very rare items that can only be found under special piles of dirt that need to be removed with the shockwave technique (which requires Tiny Kong to visit the Banana Fairy Princess to get the move). The 5-Banana Coins are found throughout levels usually one per level. Angry Aztec and Fungi Forest are the only main worlds that contain two of these items. Picking up a 5-Banana Coin adds 5 regular Banana Coins to the Kong that picked it up.
5-Banana Coin locations