Feel free to come up onto the island at any time. I can send my robot to find you if you don't want to puzzle your way around.

[At her question, he looks down at his arm and inspects the now scarred wounds, which are still rather blue looking. He's no longer bleeding, even if there is blood still around.]

Sharks would be the large aquatic predators with a streamlined design, eyes that roll back into their head, and many layers of teeth to replace those lost, correct? Then yes. This is a shark bite.