When Ueda takes Shimoda to the Insect Department to introduce himself, he's overwhelmed by everybody being a character.
That's when a vague order from God comes in, this time for an "animal that's cute, but not".
Meido, the self-designated expert for designing cute creatures, raises her hand and out comes...
They're just different in size.
Otherwise, dolphins and whales are the same.
،الاختلاف في حجمها فحسب
الدلافين والحيتان هما الشيء نفسه
Die sind nur unterschiedlich groß.
Ansonsten sind Delfine und Wale gleich.
Seule leur taille diffère.
En fait, c’est la même espèce.
In realtà differiscono solo nella grandezza, 
per il resto sono uguali.
Golfinhos e baleias são praticamente
iguais, fora o tamanho.
Размер разный,
но дельфины и киты — это один отряд.