Eleven

Her eyebrows tip up in surprise at the suggestion, and then she smiles. Of course she can bring it back. In the same way that she can find Dustin's robots and toys from the next room, she can find the rock again, amidst the water. She closes her eyes and holds out one hand, and there. It rises up out of the water, the ocean rushing to fill the newly emptied space. A fish smacks against the top of the boulder, too slow to move out of its way, and then flops off the edge and back into the water.

El narrows her eyes, and she spins the boulder upside down, making sure no other sea creatures were accidentally airlifted from their homes, then holds the rock in place in the air, looking at Hop expectantly.