Basically, this anime contains no nudity which could be harmful to it's targeted audience being children.

Some mild scenes of romance and flirting occur in several episodes.

In at least a couple of episodes, Persia's butt can be seen, once in the "dolphin episode", and once when the same character is to get a syringe from a doctor due to a sickness.

Kissing occurs in a few rare times throughout. A perfect example involves Persia giving two boys a kiss in one episode.

A very few times, a male character will be seen bathing.

In one episode, a male character appears to be nude in a funny bathroom sequence, when several young characters suddenly burst into the room. Nothing explicit is shown, since the man puts a towel in order to hide his "private part".

Mild violence happens in several scenes. However, nobody dies.

In one of the very first episodes, Persia gets a visit by a criminal man. The man is seen having a knife and a gun, but nearly the entire episode is made in a comical style, so no children should be scared and get nightmare.

In several episodes, a girl named Saya slaps or punches a boy in the face.

Characters are sometimes put in danger, some examples involving a dolphin crashing into some rocks, and a young boy about to fall from a huge skyskraper.

Characters argue with each other, and eventually get into a fight with kicks and fists in some episodes.

One episode deals with a vampire on a ship.

Very late in the series, at least two episodes have an angry father slapping Persia's butt as a punishment.

Very mild language.

Some characters can be seen smoking or drinking in some episodes.

Besides from several episodes in which any young character gets into some peril, this anime is suitable for children.