The Salmon Louse.

I am the mighty salmon louse, A parasite, In a fleshy house.

Made of fish, Oh what a dish! But there is one thing that I do wish.

That I could be in the open air, Free to fly, Free from care.

Not to worry about a single thing, In the wings of a bird, Oh, if I could sing!

I would shout to the heavens, Cry hip-hip-hooray, But instead in these scales, Is where I must stay.