Where is the Nightmare's key in Catfish's Maw?

Question

I have completed everything I can think of, and my map shows no more rooms with Chests in, yet I do not have the Nightmare's key.

Where is it in this dungeon?

Answer 1

• So whether you decided to fight gohma or not, backtrack down a screen, right, and up two screens to get back to where we first fought master stalfos. Continue right a screen and you’ll see a staircase here. If we head down this staircase at this point in time and go through the underground sequence, we will resurface and nearby we’ll find an owl statue that states, “Dive under where torchlight beams do cross…” The rest of the area leads to the same dead end that the stairs by Gohma led to. So, backtrack to the room just to the right of where we first fought Master Stalfos.

  • From here walk up a screen and push the central block once again before heading left a screen. Defeat or avoid the enemies and head up a screen. Defeat the four water tektites found in this room and then if you look at the walls, you’ll see four torchlights. If you were to connect the ones on opposite sides with lines, they’ll meet right in the center of the deep water. So just as the owl statue stated, let’s dive underneath.

  • Make your way through this underwater area, defeating enemy bloopers along the way. These are another example of Mario enemies found within this title. Resurface on the next screen to find yourself in a new part of the dungeon. Use the hook shot to grab onto the latch and extend a bridge across. Walk over to the treasure chest and open it to get the Nightmare’s Key. Backtrack through the underwater area.

Map Here

Answer 2

Go to the room with four Water Tekites. Destroy them, dive in the dark blue water, and do the rest to get the nightmare key.