Answer:
I have a shell and move very slowly but I don't live in the sea. What am I?
Known for their natural tuxedos and marching.
I'm a giant lizard that can grow up to 10 feet long. I have a forked tongue and live on an island. What am I?
The signature stroll of ducks and penguins.
Tall when seated, short when standing.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.