You carefully investigate the area, finding some of the still intact murals to be quite a contrast to the previous Temples you've encountered. They're more... lively. Depicting the Zora and their longstanding friendship with the Hylian people. Though... something does strike you as odd. You notice a smaller creature with the Zora on one mural, green, round, like the cross between a fish and some kind of amphibian. They're depicted as helping the Zora with something, though what it is seems to have been destroyed. It's... oddly familiar.
You also notice something shiny sitting at the bottom of the stream bisecting the room, caught on a piece of wood. Ah, but the water... still don't want to risk. Lynna gives you a curious look, then smiles. "Leave it to me, Termina!" Her hookshot shoots into the water and grabs hold of the wood the thing's caught on, pulling both up out of the water...
Aha! [Piece of Heart]! That's three of the four needed for a full set!
You flash a thumb's up at Lynna. "Thanks for that."
She giggles. "Told you, fishing is my hobby. Not quite the same with a hookshot, but ideas aren't too dissimilar."
With the item retrieved, you press onwards into the next room. There's a vast pool in the middle of it, several pillars under a set of aqueducts that make them give the impression of waterfalls. Even the pillars themselves seem to be ornately decorated, beautiful patterns all around them. There are three sets of stairs to the north, east, and west of you, the northern one seeming to match the aqueducts' point of origin.
You also spot out of the corner of your eye something in the vast pool, a bluish green figure. It's keeping still, whatever it is, waiting for you to make your move.
>A. Draw your sword and tell whatever it is that's in there to show itself
>B. Head north, move on and deal with it later
>C. Head east, ignoring the creature
>D. Head west, it's probably not a threat
>E. Something else?