I know this isn't the place for videos, but I encountered a bug while recording and figured there's nothing wrong with sharing the footage. Feel free to delete if I'm in the wrong obviously. It started out at 4:36 in the video if the link doesn't automatically start you there. As you can see, the shark started going under my raft and then was swimming above/on top of my raft, all in a set circular path. I could get him to leave by spearing him 3 times, similar to if he were actually chewing on/damaging the platforms. From what I recall, none of the platforms were damaged, and from the amount of time he were there, I think if he was actually attacking a foundation it would've been destroyed.