This Crab

Quiet and subtle,
This little crab scuttles.
Across the sea and land,
Leaving its trail in the sand.
Large are it's claws indeed,
Though gentle is this crab I plead.
Scrapes and scratches mar it's shell,
Countless hurts it knows too well.
For few know why nor care to ask,
Why these scars cover it's back.
They are not from enemies with tales to tell,
But friends and witnesses to it's own personal hell.
By the world at large battles seen unbidden,
They know not what lies within.
Thoughts, hopes, wishes, and dreams,
Fears of what imminently lies unseen. 
The need to be close, wanted, loved,
The want to give away it's heart unlocked.
To feel these things for another,
Those feelings shared by the other.
Though to give it away this crab will be leery,
For all those before have left it weary.
To find this soul with whom it feels equal and fair,
Together they'll have grand adventures to share.