Tentacool and Tentacruel - S1-E19
Continuity mistake: When Ash and his friends arrive in a boat to rescue the sailors, Brock's green vest turns black. (00:03:01)
Tentacool and Tentacruel - S1-E19
Revealing mistake: When Brock says that Tentacruel is using Meowth as a puppet, his neck is not fully coloured in. In addition, while Tentacruel was holding Meowth, it was actually a Tentacool that was controlling him. (00:13:39)
Tentacool and Tentacruel - S1-E19
Other mistake: After the Tentacool on Meowth says that Horsea must be punished, Meowth's mouth is missing. (00:14:38)
Tentacool and Tentacruel - S1-E19
Continuity mistake: When Ash wonders where Misty went, the part of his hat that adjusts the size of it changes from red to white. (00:15:46)
Tentacool and Tentacruel - S1-E19
Revealing mistake: When Brock says, "Ah! Zubat!" his neck is not fully colored in. (00:15:50)
Tentacool and Tentacruel - S1-E19
Continuity mistake: When Misty watches Tentacruel go back into the sea after Nastina flies off, her bag is in front of her. But in the next shot, it is behind her. (00:18:54)
Answer: Yes it ran away because Layla hurt its feelings.