Social Science- Deeper meaning

Once upon a time there was a wise man 
who used to go to the ocean 
to do his writing. 
He had a habit of walking 
on the beach 
before he began his work. 
One day he was walking along 
the shore. 
As he looked down the beach, 
he saw a human 
figure moving like a dancer. 
He smiled to himself to think 
of someone who would 
dance to the day. 
So he began to walk faster 
to catch up. 
As he got closer, he saw 
that it was a young man 
and the young man wasn't dancing, 
but instead he was reaching 
down to the shore, 
picking up something 
and very gently throwing it 
into the ocean. 
As he got closer he called out, 
"Good morning! What are you doing?" 
The young man paused, 
looked up and replied, 
"Throwing starfish in the ocean." 
"I guess I should have asked, 
why are you throwing starfish in the ocean?" 
"The sun is up and the tide is going out. 
And if I don't throw them in they'll die." 
"But, young man, don't you realize that 
there are miles and miles of beach 
and starfish all along it. 
You can't possibly make a difference!" 
The young man listened politely. 
Then bent down, picked up another starfish 
and threw it into the sea, 
past the breaking waves and said- 
"It made a difference for that one."

-What is the meaning of this poem
-Show evidence
-Add an image

The message of this poem is to show that one small good thing can make a big difference. A small thing like chucking the starfish back into the ocean is a huge thing for the starfish, it would've dried up in the sun but its life was spared.