[That was very much the stare of someone who is not comfortable swimming back to base. Arthur is a perceptive man, he can tell that much, at least, and while he wouldn't leave someone behind, someone giving off fear or anxiety could agitate the sealife that otherwise might not even notice their presence.]

I can worry about the navigation. If you can fix the vessel, feel free, otherwise I can tow it back if you aren't up to the swim. [It's not that big, he can probably manage. Atlanteans are fairly strong.]