Luckily, in order to get to Dairon we only need to move a short distance north-east from where we picked up the Diffusion Beam. You can check the map below to see the location of Samus, who's stood at the purple teleporter to Dairon, in relation to our last ability pickup.
Once we arrive in Dairon, we're gonna make our way from the teleporter platform and head south and right, into a heated area and then down and over to the left to reach a network station as indicated in the maps provided below.
From this network station head left and then up to reach a nearby E.M.M.I. zone. You shouldn't have too much trouble on your first visit to this patrolled area, just head up the way as far as you can, then right through a power door, then up again and left to exit the E.M.M.I. zone.
Again, we've indicated the path we've taken below, just follow the map left and up and you'll eventually come to the yellow map station you can see in our pics. Save your game here and then make your way out to the left and directly south to the generator where Samus is stood in the last pic below. Restart the power in the area and we can now make a move towards grabbing our Morph Ball Bomb.
Head right out of the generator room by blowing up the explosive bit of wall, then head up the next area to the red missile door, blow it open and grab your prize. Good job!
Need help with where to go now that you've got the Morph Ball Bomb? We've got a guide for that!
This guide is part of our Metroid Dread walkthrough and guide series, which includes all ability locations, all missile tank locations, all energy tank locations, all energy parts, all suit upgrades, all power bomb tanks, plus every compatible amiibo unlock, E.M.M.I. and boss battle tips, and other helpful tips to help you get through the game and get those post-game unlocks.