Astral Sharks

Hi, I was wondering if anyone has encountered shark-like beings in the astral realm, that are connected to living people? Parasites, I suppose? At times, when I can get deep enough, {getting to zone where on either falls asleep or astral projects} to explore why I have had some issues sleeping or feel threatened all the time, or why I am having issues with certain people , I have seen a shark like head, with teeth like from the movie Aliens looking at me. The first time it occured, there were 2 of them, I was up all night, or could not sleep naturally....I kept waking myself up, as I hit a zone....Then I saw these, & figure this is why I was waking self up....The most time, I saw only one. I believe it is connected to people next door, or something attached to them?

Anyway, anyone seen these & know how to deal with them?