Meaning of "don't break at all"

[Winwin2011]

There are big waves and little waves,
Green waves and blue.
Waves you can jump over,
Waves you dive through,
Waves that rise up
Like a great water wall,
Waves that swell softly
And don't break at all,
Waves that can whisper,
Waves that can roar,
And tiny waves that run at you
Running on the shore.

By Eleanor Farjeon
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What does "[FONT=&#26032]And don't break at all[FONT=&#26032]" mean in the above poem. Could anybody help, please?[/FONT]
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[bhaisahab]

Have a look here: break verb (WAVES) - definition in British English Dictionary & Thesaurus - Cambridge Dictionary Online

 

[Winwin2011]

1. Have a look here: break verb (WAVES) - definition in British English Dictionary & Thesaurus - Cambridge Dictionary Online

break verb (WAVES) - definition in British English Dictionary & Thesaurus - Cambridge Dictionary Online

[I usually + adverb or preposition] (of waves) to reach and move over the beach, hit a cliff or wall, etc.
A huge wave broke on/against the shore/over the boat.

break - definition. American English definition of break by Macmillan Dictionary

[intransitive] if waves break, they reach their highest point and start to fall

As I am not good at English, I find the above definitions are very difficult to explain to a child. Could anyone make the meaning simple? i.e [FONT=&#26032]And don't break at all.

Thanks.
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[JMurray]

Waves often move through the water by creating a smoothly shaped swell on the surface. When this swell reaches a beach or is made to rise higher by wind or currents, for example, the swell can break out of its smooth shape causing a crest of water and foam to fall. This is when a wave breaks. Some waves swell up and move across the surface and then die down without ever breaking. These are the "waves that swell softly and don't break at all".

not a teacher

 

[Rover_KE]

HERE is a picture of swelling waves.

The top one is beginning to break on the right hand side.

Rover