The Secret Triwizard Challenge

You step up to the silver pool. Surprisingly, the pool is so clear that you can see the bottom of it. And at the bottom lies a key. Clearly, you'll need to get that to open the next door.
You'd like to make an attempt at getting the key right now, just to make sure the rest of the landmarks in the glade aren't red herrings. What do you do?
(If this is your first time inspecting the silver pool, click one of the options to try to get the key right now to move forward.)
(If you've inspected the silver pool before, click 'Continue thinking.' to move forward.)