He definitely clocks it, but no, it isn't an issue here. Nor is it really an issue in general- it's just a difference between them he notes. Really, it's nice that some young people can have hope for the world, or whatever. He thinks that sort of energy is needed, but it's not the kind of energy he has at this juncture. He's given up. Except... Not on beating these cultists, apparently.

He follows her finger as she points at the shadows. He didn't catch those. He nods, taking his trident off his back and swimming toward them.

It seems the scum are still multiplying like rabbits, and there's four of them here, convened and chatting. Thankfully, they do not currently seem to have a sacrifice, but it seems like they're getting ready to go find one, suiting themselves up and discussing plans. He looks at Tess again, making sure she's ready before beckoning for her to follow him and swimming right over to the cultists. Since they aren't busy, he figures they may put up more of a fight, and it's clear they're strong swimmers as all native undine are. One of them goes right for Finnick, and he slashes his trident at them swiftly. A small amount of blood blooms into the water, and the cultist tries to grab him, but he swiftly moves out of the way.