You give some weight to the seemingly ridiculous answer. "These days, humans have a tendency to think of pirates as something from history, something old-fashioned. But there are still pirates around today. We never found cargo or lifeboats, and when humans intentionally sink ships they can no longer use, they usually do it in water shallow enough for the ship to help form a coral reef."
Flynn laughs. "Pirates sounds pretty logical to me! Maybe they stole the cargo and the ship, forcing the old crew into the lifeboats. Then to cover their tracks, they sunk the original ship."
Tamru grins and rolls with the logic. "Making off with priceless artifacts without a trace? I like it."
You approach the cargo entry hatch and pause for a moment. You've only ever had to do this with Tamru, never two humans at once. The logistics are different. The passageways are too tight to swim alongside them both at once, but you could have them go single file instead. The problem is that the person in the back won't get as much light from you. Or you could swim with one at a time, but that would leave the person alone waiting out in the dark. Oh! But those phosphorescent fish—maybe you could catch one.