NaPoWriMo 18: Thoughts?

Thoughts swim around me,
Circling.
I reach out at one,
From my perch on the shore,
Lose my balance,
Fall.
Into the deep,
I plunge.
They flit by,
Flapping little notions,
As they go.
I kick out.
They scatter.
I pull myself deeper,
To follow them,
During their playful antics.
They dart toward me,
And back away again.
I am determined.
I fling an arm out,
Catch,
Grasp.

I have caught a thought.