As of this episode, the docking procedure of the Cetacean has changed. Instead of moving into the dock on its own power, it now rests on huge clamps which transport the vessel inside the cave. The sea gate has changed too. It now resembles a camera diaphragm whereas the previous gate was one gate which split into two parts to allow the Cetacean entry.
Schubert: What's that?
Brent: Someone in the perimeter of the phase shifter.
Schubert: An animal?
Brent: Too big. I'll have it pinpointed for you in a minute. It's a vessel of some kind, I think.
Schubert: Of course, it's the Cetacean. Who else could've found the source. Oh, they are good, aren't they? It's a pity we're gonna have to step on them.
Elizabeth: I think I know what he's up to. He's using his sonar to block out the microwaves.
Jomo: He's no opera singer and that thing is no wine glass.
James E. Brodhead (Trubshawe) was actually credited as James Brodhead.
Richard Williams (Jomo) was actually credited as Richard Laurance Williams.