Snow-white and very elegant am I,
Whether on land or floating on a lake,
I attract a lot of curious tourists,
A second look of me they always take.

Though I resemble a huge question mark,
Like distant cousins the goose and the duck,
I am however much more beautiful,
And of course that is more than just good luck.

My diet consists of roots, algae and plants,
Insects and worms I do not like one bit,
And as you can see from my appearance,
What I consume do keep me super fit.