LOBOS: Where have you come from?!

DOCTOR: If you take a look into your screen, perhaps you will find that out?

(walruses swimming)

LOBOS: What are these creatures?

DOCTOR: Just some old friends of mine.

LOBOS: But these are amphibious creatures. You are not an amphibian.

DOCTOR: Oh, I'm not, am I?

(the Doctor dressed in Edwardian bathing costume and straw boater)