Big Bungee Piranha is the fourth boss fought in Yoshi's Island DS. Big Bungee Piranha is similar to Naval Piranha. He takes the form of a Bungee Piranha.
To defeat it, Yoshi must jump on a Chomp Rock that is conveniently placed in the middle of the stage. When Big Bungee targets Yoshi there and starts to descend, you must then jump off. Big Bungee Piranha will howl in pain which will give you an opportunity to hit its weak point which is its tongue. This must be done three times to defeat it. To get more eggs, Yoshi must eat the Nipper Plants (not the Spores, because they won't produce an egg).