Last White Shark

I am white,

I am a blanket,

May I cover you as I devour?

Please help me 

I am the last of my kin,

I hear fading sounds of scuba divers,

My last sight is water 

As it's clear, I am down.

As fast as light

My kin is going endangered

I used to be elated with hunting,

As sharks were Kings, I am royal.

For now,

I am a ghost,

Roaming and wandering.