Eat or Die! Mushrooms from Hell

En route to the Land of Lightning, Naruto and his companions put in at a port to lay in provisions before tackling the Sea Route of Silence, a fishless, windless stretch that takes two weeks to cross. Down in the hold, a mushroom Naruto had bought from a vegetable seller starts multiplying, siphoning off Yamato's chakra and steadily consuming every scrap of food and drink aboard.

Driven to the edge by prolonged hunger, Naruto and Guy give in and eat the fungus, only to be poisoned and lose their senses, turning on each other in a brawl until they cough the mushrooms back up. Naruto then summons Gamatatsu and sends him to Shima to beg some of her insect cuisine. The vegetable merchant and his gang slip aboard, assuming the crew has starved to death, but the Konoha shinobi rout them, load them onto a small boat, and cast them back down the Sea Route of Silence with the ravenous mushroom as their only food. As the ship clears the passage, Guy is seasick once more while Yamato shakes off his temporary ailment.

The episode is number 229 of Naruto: Shippuden and falls within the anime-original Paradise Life on a Boat storyline. It aired in Japan on September 22, 2011, and in English on February 15, 2014. The opening theme is Lovers and the ending theme is Shout Out Your Desires!!!.