A Cold Shower
Using the Ice Arrows effectively in the Great Bay Temple isn’t always immediately obvious. Ice Arrows can freeze water, but only in certain spots (more on that later). Along with these spots Ice Arrows can also freeze floes of water from the ceiling. This comes in handy for the spot pictured above, as well as a room involving weight-sensitive scales. For the latter room, it’s also important to note that the frozen water floes can also be re-melted using Fire Arrows. The water will then weigh down the scale and allow you to continue on.
While you travel around the dungeon you may also note that there are parts of the water which sparkle. Take note of these spots, as these spots are the only places where you can create platforms using Ice Arrows. You can no longer create ice platforms anywhere in the dungeon, as these sparkling spots are the only places. The reasoning for this isn’t quite clear, as these spots are also the only places in the entire game that you can create ice platforms. Even outside of the dungeon.
So, as a result, you can take the trails of sparkling waters as hints to where to go next. There’s one leading to the Gekko miniboss guarding the Boss Key, and there’s also one in the room with the yellow and green pumps as pictured above. There are also a couple sparkling sections in the latter room that seem to branch off into nowhere; if you follow them and look up, you’ll find hookshot spots to get to a room above the ceiling with a Stray Fairy.