i cant find anything on it and it doesnt make sense to me
i really need some help
it will be much appreciated

Sea waves are green and wet,
But up from where they die,
Rise others vaster yet,
And those are brown and dry.

They are the sea made land
To come at the fisher town,
And bury in solid sand
The men she could not drown.

She may know cove and cape,
But she does not know mankind
If by any change of shape,
She hopes to cut off mind.

Men left her a ship to sink:
They can leave her a hut as well;
And be but more free to think
For the one more cast-off shell.

Sand dune are the same shape as waves. The sea drives them inland. They bury fishing ports, so that if the sea cannot drown the men in boats it will drown the men in houses. But the sea doesn't understand people. They can abandon a ship, they can abandon a house and move on.