"Shark and IV's World-Shaking Mayhem!! Hell-Shark Tag Team" is the one hundredth and fifteenth episode of the Yu-Gi-Oh! ZEXAL anime. It first aired in Japan on August 4, 2013.

The poison trap set up by the enemy is slowly eating away at Shark and Rio's bodies! As if to ridicule them, the enemy's already mighty attack intensifies, resulting in Shark and Quattro's Life Points being cut down significantly. However, Shark has doubts towards his own existence, believing he can't bring out the power he needs. And when he's driven into the greatest corner yet, he finds himself incapable of summoning the Legendary Numbers he got from the Ruins.