Visible crew/equipment: After Penny asks everyone on the ship to double-check that everything is tied down, when Will tells Robot that he thinks he found something to help them later, there's a yellow T-mark taped to the floor which is visible at the bottom of the screen. (00:31:20)
Question: The eels eat the fuel in all the Jupiters, other than the one in the desert. Somehow, the eels get in all the fuel tanks. We know that the Robinson's ship got them when their ship sank and flooded, so how did they get into all the other ships' tanks, and why wouldn't more eels suck down the fuel later added from the desert ship?