Super Mario 64 DS - Walk Underwater Using a Shell

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• published: 23 Jan 2017
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This glitch makes it possible to walk underwater using Yoshi and a shell. This theoretically works in any course with both water you can enter and a shell, so CCM, JRB, SSL, DDD, SL, and THI. It is only useful in JRB and DDD though. I collect Through the Jet Stream BCCless using this glitch to show it off, a lot faster than my previous video when I discovered the first BCCless strat for the star (https://youtu.be/70F5DqmbSDI). To do this, you have to do a trick with a shell so that you can ride it again after spitting it out. I showed this off in a recent video (https://youtu.be/VKtARldfd5Q). Essentially the shell has to be touching the ground the first frame after you spit it out, which causes it to remain stationary instead of travelling forwards in a straight line. This glitch can also be done by having it touching the surface of the water the first frame after being spat out. There are a couple of different but similar things that can occur if you start riding a shell near water, which I will explain. The first is when you start riding the shell, you will be far enough below the surface of the water that you will stay beneath it, and will now be riding the shell underwater. However, Yoshi was not swimming when he started riding the shell, and Water Storage (https://youtu.be/mSaHtiD2keM) does not occur. Going deep enough into the water does not cause you to start swimming and you can stay under the water for as long as you like, as long as you don't go close enough to the surface to clip onto it. The second is the one done in the video, though for the purpose of the video it makes no difference. When Yoshi starts riding the shell he is swimming, meaning that Water Storage happens, as Yoshi has left the water without going to the surface as intended. This has a variety of effects that are fairly interesting such as being able to start swimming again by creating an egg. Nico Skow made a video on doing this in SL: https://youtu.be/b0Ejgehkm0w. The final thing that can occur is that Yoshi is swimming when he starts riding the shell, so Water Storage occurs, but he is too close to the surface so that he clips onto the surface immediately after starting riding the shell. Despite being above the surface, because you have Water Storage you can just break the shell and fall straight through the water to walk underwater. This glitch will be very useful for the 150 Star TAS. Just the star shown saves about 9 seconds over the old strat (linked in first paragraph) when both this strat and the old one are optimised. This also saves time for the stars which require going to the cave area of JRB, making it worth it to do two trips to JRB, one as Luigi and one as Yoshi. The Secret Aquarium is a lot faster as Luigi and 2nd Key Door Skip can be done straight after JRB as Luigi (https://youtu.be/sLW1lRJKKwk, https://youtu.be/UfVZu-PkMck), so the stars faster as him may as well be done as him to save the time it takes to put on a cap if they were to be done as Yoshi. Visiting JRB as Yoshi also means a slightly faster strat can be used for Blast to the Stone Pillar (https://youtu.be/Atak8BsxKQ0). Walking underwater should also save some time on Chests in the Current in DDD. If there was a way to walk underwater and also get a cap, by having it at the start, losing it, then putting it on while underwater, then that would potentially save time on other stars, but sadly it doesn't seem to be possible. The problem is that putting on a cap with Water Storage active will make you start swimming again, so Water Storage needs to be cancelled. This can be done by walking on the ground underwater, but the ground near to the shell is too close to the surface for you to be able to walk on it without instantly starting swimming again. So you would have to use the lower ground, which is very far from the box with the shell. This means that if you get hit by a skeeter to lose the Mario cap and have it travel towards that ground then it will disappear before it gets there. Thus I don't think it's possible to do it, and if it was the setup would be so crazy that it wouldn't even save time. One final note: though Nico's video was uploaded before this one, I discovered the glitch: this video was just unlisted for a few days.