Pokémon (1997)

S8E2 The Relicanth Really Can

The group meets a treasure hunter named Adam, who is on a quest for riches. Intrigued, they agree to join him in locating an ancient ship rumored to be filled with treasure. As they descend in their submarine, they unexpectedly run into Team Rocket, who has their own plans to claim the treasure linked to the Relicanth Adam spotted earlier.