Sam is, admittedly, letting himself be bullied by crabs, just because he doesn't have it in him to actually try and wade back out of the circle of them. They're not really doing any damage anyway, it's just a nuisance.

When they start floating off, complaining all the way, he just stares after them a moment, before casting around for the source of his apparent rescue, punching his scanner on reflex only to be reminded that, right, it doesn't have juice right now. Some more time in the sun was necessary for it to come back online. So he just turns in place now that he's pretty sure he's not going to step on a crab, to actually see her watching him.

"Uh. Thanks."