Pokémon the Series: Sun & Moon Episode 31: The Island Whisperer!
Episode 31 of 146 of Pokémon the Series: Sun & Moon, aired June 22, 2017, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Kahuna Olivia is leading the class on a field trip to Akala Island, and everyone is excited! Before they leave, Olivia demonstrates her knack with Pokémon by calming an angry Tauros and bonding with just about everyone, including Ash’s standoffish Litten.