Can someone explain this joke please?

Question

What do you get when you cross a polar bear and a seal?

ANS: A polar bear.

I don't get it. What happens to the seal?

Answer 1

the seal is in the bears stomach being digested

Answer 2

the seal gets eaten

Answer 3

You get a half breed of a seal and a polar bear. You know what I mean? If the answer is the polar bear will eat the seal, I don't even think it would even be a joke because that's an obvious answer.

Answer 4

The polar bear eats the seal and then the seal is gone and the bear is still there!

Answer 5

The poor seal gets eaten by the polar bear. Shame.