is swimming
El pequeño patito está nadando.
The little duckling is swimming.
Mira a ese niño que está nadando.
Look at that child who is swimming.
Tom está nadando.
Tom is swimming.
Solo descubres quién está nadando desnudo cuando baja la marea.
You only find out who's swimming naked when the tide goes out.
Él está nadando en contra de la marea.
He is swimming against the tide.
Aunque Tom está enfermo, hoy está nadando nuevamente.
Although Tom is sick, he is swimming again today.
Un hipopótamo feliz está nadando en el lago.
A happy hippopotamus is swimming in the lake.
El niño que está nadando es mi hermano menor.
The boy who is swimming is my younger brother.
El niño está nadando con sus amigos.
The boy is swimming with his friends.
He is swimming now.