The sharks are just regular sharks, so Jade is more than capable of taking care of them. They also don't listen to negotiations, so that's the best way forward.

What they find is a structure made of stone that looks like some kind of an underwater building. Maybe a temple, maybe something else! There's only one way forward and that's going inside. Will they explore this strange structure?

"Feeling" wise, it gives a slightly eerie vibe.