I am a bird. I'm black and white. I cannot fly. I can't walk well. But I can swim. And I like fish. What am I?
It's a penguin.
I am an animal. And I am long. I have no legs. So I can't walk. But I can swim. What am I?
It's a snake.
I am a school thing. You can write with me. You can draw with me. And I am shorter when you use me. What am I?
It's a pencil.