Friendship without benefits

A gentle song is heard
 The song of a boy and a girl.
This song is about a dolphin.
With a gracious, helpful strong fin.
It was in the early morning
The sunshine was really  warming.
The sea was so attractive,
The sun was so bright and active.
It happened years ago
The boy was swimming alone.
The boy decided to dive
When suddenly  storm began.
The boy started crying of fear.
He needed someone to appear.
But sister was fighting the waves
The tears were on her face.
The children saw a gray fin
Their hearts sank to their feet.
They thought it was probably shark.
The world became for them dark.
Thanks God,
It was dolphin in fact.
The dolphin slipped on the crest of a wave.
He decided firmly to save anyway.
He rescued the boy and his sister.
  The dolphin remembered his children.
Assisting his fin for the victims,
Took them to the  shore
And my opinion is obvious
Nature has given dolphins 
The very important gift
Friendship without benefits.