The two travelled the sea while Fred sat on Leviathan because he is too slow to travel by himself in the sea.
Fred feels he is on a vacation touring under the sea as he watches the colorful corals, the fishes swimming around him.
If other people see this scene, they will probably also be fascinated by the fantasy-like scene in here.
Even though they are moving with a very fast speed, Fred can still clearly see the glistening beauty surrounding him at the moment.
'Such a wonderful place this is, Eliza will probably be vlogging this one if she ever has the chance to travel here like me.'
The picture of a girl who always carries a camera with her crossed Fred's mind, all the memories of him involving that girl started flashing.
Then Fred noticed something as he is in his memory, from all the interaction he had with Eliza, he did not even see her become scared.