The kid is cautious with approaching places where something dangerous might be. Kisame approves, and takes a moment to look around. He spots the crab and his half tempted to catch it for a meal, but it's too small to be worth the effort. So instead he watches with interest to see if the crab or the predator wins the little contest that's about to happen.

At the same time, he keeps attention on Naoki, appreciating the extra light that doesn't hurt his eyes.