Mammals

Lily- Annabelle, what's the difference between a mammal and a sea creature?

Annabelle - a mammal has three humps?

Lily - no mammals have to breathe air even if they live in the water. Like a whale is a mammal did you know that?

Annabelle- no. Or like a dolphin?

Lily - yes , good Annabelle, dolphins need to breathe air too. And mermaids, they are mammals too.