YES! SEE!? IT'S MADDENING!
I have tried everything you've mentioned, plus tossing bombs and detonating them when they go below the water, trying to electrify it with arrows, even tried to use the raft. Nothing works.
You're all misunderstanding me. I don't mean that I can't get close. I've used both ice pillars and a raft. What I mean is: once in the grip of Magnesis it will not move.
Normally, when you have a treasure chest that is half buried in sand, you grab it with the rune, pull it up for a few...
So I found this treasure chest here..
...and no matter what I do, I can't seem to actually get it. It's underwater and partially buried in the sand. Nothing I've tried seems to be capable of dislodging it. Anyone else find this? Right next to it is a sunken, but not buried treasure chest that...