The shell

The shell is as mythical as a unicorn
Still as salty as the sea
The mythical sounds rumble into your bedroom
You take it to the ocean, it stops
As it travels beach to beach
WOOSH, I'm over here
BOOM, I'm back

She feels extra rough like an old brick
She is unique. See her sitting still on the sand as a snail
She is as bright as the setting sun
It is like a treasure at the bottom of  the ocean 

A shell is a soldier's armour is hard and rough
It protects the sea floor, it is a shell