Disney's Adventures of the Gummi Bears (1985)

S2E12 My Gummi Lies Over The Ocean

Tummi constructs a large boat, but Gruffi wants it sunk. Yet, acknowledging the effort Tummi put into it, Gruffi permits him a single sailing adventure. Their journey takes an unforeseen twist when they find themselves on a volcanic island, where they encounter another Gummi Bear named Gusto, who happens to be an artist.