Revealing mistake: When Tarzan walks over to Jane who's in the water, he's wearing a thong under his loincloth. (00:45:50)
Continuity mistake: The scenes that Jane is wet or in the water her dress is very open and revealing, and the bodice nearly hangs off her shoulders, revealing her breasts. But the scenes she is dry, her bodice is very prim buttoned up with a butterfly collar. Obviously two different dresses for very separate effects.
Deliberate mistake: When the lion appears during the beach scene, the timing doesn't add up. In the first takes it makes its way halfway out to the sand, while Jane is bathing in the ocean. After Jane is done and redresses herself, the lion suddenly emerges from the place it first appeared.
Factual error: The elephants in the movie are Indian elephants, not African ones.
Continuity mistake: Near the end of the movie Jane's wearing a loin cloth like Tarzan that the natives dressed her in. When she's with Tarzan and a monkey after washing off the white paint she's suddenly wearing a skirt.
