Commander Shore loads videotape into a film projector.
While relating the events of "Raptures Of The Deep", Troy somehow manages to shave and change uniform.
Troy's clock is missing it's hour hand in close up shots.
The secret compartment in the alien vessel had clearly obvious hinges, yet the scientists somehow missed it.
Troy can't know that Ali Khali has the same 'line of patter' as El Hudat as he wasn't aboard the Wadi when El Hudat was boasting in "Star Of The East".
Given the emergency situation, it seems odd that only one scientist would be assigned to deveoloping a new metal for the missles rather than a whole team.
Stingray's missiles were ineffective against Grupa and Noctus' craft and Marineville was wide open to attack, yet they just went home, which was a full days travel and then came all the way back again.
After Troy's jet crashes into the ocean and explodes, the model can be seen intact, floating on the surface of the water.
The security pass that X20 flashes at the guard can be seen to be Sandy Gibson's pass that he had used only minutes before. Although the picture is obscured, Sandy's name can be seen on the left.
After Phones says "I could have sworn the room was different before", a wide shot of X20's control room shows a painting still moving back over a control panel.
Due to the reuse of footage of Stingray caught in a whirlpool from the episode "Treasure Down Below", Stingray's hydroplanes are damaged in one shot but show no signs of damage later.
The Wadi appears to disappear due to the editing between shots of it and shots of aircraft flying over the same area from the same camera position.
Despite having the real Mechanical Fish they captured in "Stingray", Troy and Phones use am unarmed fake Mechanical Fish built by WASP engineers to rescue Marina.
Stingray returns to Marineville on half power, yet still manages to achieve a speed of Rate 6. According to the episode "Stingray", Rate 6 is maximum.
The WSP Commander has yet another voice due to him having been voiced by four different actors.
After Troy finishes talking to Phones about if the ice is a trick, we are cut to a shot of Stingray trapped in the ice. This is because they are using a shot which happens later
In Troy's dream, there is a telephone with the number "Lemoy X20000", but he should have no idea that Agent X20 lives on the island of Lemoy.
A puppeteer's hands can be seen holding Phones' arms as he unrolls the plans of Marineville.
Troy pronounces Gadus's name as "Gad-us", but in "Hostages Of The Deep", Gadus himself pronounced it as "Gay-dus".
The magazine that Phones reads clearly has blank pages inside.