There is no height requirement to ride, and the attraction is appropriate for children of all ages. Ursula's Lair is the only dark scene, but most children seem to find her more comical than scary.

The "Under the Sea ~ Journey of The Little Mermaid" ride at Disney Parks is generally considered a very gentle, low-intensity attraction suitable for all ages. It is an "omnimover" dark ride where guests travel in colorful clamshells through scenes from the classic film. However, "scary" is subjective for young children. There is a specific segment featuring a large, impressive animatronic of the sea witch Ursula, which is accompanied by darker lighting and more dramatic music. While the ride has no drops, high speeds, or sudden scares, the darkness of certain "underwater" transitions and the presence of the villain can occasionally be unsettling for toddlers who are particularly sensitive to antagonists or the dark.