Bigmouth Galaxy - Bigmouth's Gold Bait

Welcome to the Galaxy!
Mario
We feed the hungry Luma outside the Bedroom Dome 800 Star Bits. We land in the "mouth" of a giant stone fish planet. Near the edge is a large gold treasure chest with horns. The nearby sign says, "This chest will open only for the shell that shines.", although we could've figured that no ordinary shell would open this. Penguru is also in this galaxy, saying, "This is my hideaway. It's the perfect spot for fishing... and being left alone!" If we head to the back of the mouth, we find a large pool of water. We grab a shell, dive in and find a 1-up at the bottom, as well as Boos. We find a wall of bricks blocking our progress, so we spin it to make a hole in it. Make it a little large, but you don't have to destroy the entire wall. Beyond the wall is more water, and another pool of water on the ceiling. There is a gap of air between the two, but we can't reach the pool on the ceiling by ordinary means. We can either dive down for Launch Star Ships, which will make a Sling Star or use our shell to reach it. In the top pool of water is a gold shell. We grab it and go back down to the lower pool just by aiming in that direction. We swim back through the hole in the brick wall to find many more Boos than when we first dove in. This is not a problem as all shells produce a light that makes the Boos poof away. We take the shell to the treasure chest and out pops Red Toad. The Toad Brigade music plays. He says, "MAN, that was close! ...Oh! Mario! I almost forgot to tell you something. I was trying to get a Star, but I fell into this treasure chest. Let me tell you, it's even smaller than it looks! Anyway, here's the Star I found in the there. No, really, it's yours! Take this Power Star!"
Star Get #64, Galaxy Complete!, 2406 Star Bits, 18 Lives

Interlude
We enter the Engine Room Dome, where Polari informs us that an enemy base has been located. A Gearmo says, "It might get a little rough from here on out, but just do your best and you'll be OK!"

Luigi
We feed the hungry Luma 800 Star Bits to access this galaxy. We dive into the water and break a hole into the brick wall. We get the Launch Star Chips at the bottom of the pool. We use the Sling Star to reach the top pool and the gold shell. We take the shell to the treasure chest to free Red Toad, who gives the same speech, aside from saying "Luigi". We get the Star.
Star Get #64, Galaxy Complete!, 5 Coins, 2848 Star Bits, 44 Lives