These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Darker and Edgier: The second and third movie. The second having Jessie nearly drown or get incinerated by the tanker fire. While the third having Willie actually nearly kill one of the whalers that was hunting his mate.
"Funny Aneurysm" Moment: They don't get much more horrific than this. Try to enjoy the movie after learning what happened to Keiko in reality.
Unfortunate Implications: The theme to the first movie was sung by Michael Jackson and came out not long after the first time he was accused of child abuse, which amused people in some parts of the world where "Willy" is slang for a penis.