That's a good question. He first pokes at his own hand with the other, and watches the waves crash and collide, but all he feels is his own very normal human skin. But maybe it's different if it's someone else? So he rests his hand on the table in easy distance of Soldat (Sarge, he supposes, actually).

"Doesn't feel any different to me," he comments, and Sarge will find the same. The water effect is purely visual, and contained within the normal shape of his own limbs. "A logia is a type of devil fruit where I'm from. You know how I can silence things? Logia fruit users have powers that make them into other things. A water logia would be able to actually be made of water if they wanted," he explains, then frowns. "Except maybe not water. Dunno if that's possible. But I know a guy made of light, for example."

And how exactly would the Vice Admiral fare here? Beacon isn't a place for a person made of light, it occurs to him.