Great! He's...found a friend. That's better than being stung, he guesses. The problem is, how the hell does he communicate when he can't project memories, or talk, or do magic as an octopus?

Well, there's always charades.

He's going to give this one more try and look to see if there's a jellyfish projecting any memories of the Hunger, or missing Bureau members, or weird glitchy stuff on the island - things he wants to know more about. If he manages to find one, he's going to get his jellyfriend's attention and gesture pointedly at the jellyfish projecting the memory. That! Show him more about that!

If he can't find any jellyfish projecting memories he wants to know more about, he's just going to hang out for a bit and see what happens. Maybe wave at his new friend, swim a loop or two, see if his jellyfriend speaks up a bit more.