Although I do not very well understand who the "you" is in your first post of a new thread ( welcome ) this Wikipedia link gives quite some information on the remora - shark issue.
Some think commensalism others mutualism,(don't wanna be a remora).

link

Quote:
As a high school teacher I am reminded of how many symbiosis
nurtured students attached themselves to me, and I don't think
it was hero worship. Hard to hurt their feelings, but they
needed to get a life. I called them barnacle-buddies.
smile