The blobby giant microbe reproduces itself by cell division. However, the resulting offspring is never seen again within the very restricted confines of craft in which the characters are imprisoned.
Looking at the beaker pouring out the sea water (about 20 minutes) the words "Made In USA" can be seen along with a brief view of the "Pyrex" brand name. All the other writing in the probe is in an obscure alien dialect and it is hardly likely aliens would have beakers from Earth brand names.
At 19:10, a split screen goes into effect, hoping to make small scientific items look huge. Instead, it erroneously makes the people look like they've been shrunk to the size of mice. The split screen isn't perfect. The base of the instruments "hops" up and down as the camera, or the process, can not keep the image absolutely still.
When Amanda brings the life jackets into the cockpit she enters through a cheap cloth curtain to our right, the pilots left, which means the cockpit would be pointed ninety degrees to the left of the fuselage. This was the last show of the series, so the producers obviously wanted to save money by not having to have a set showing behind the pilots so they made a wall and put the entrance off to the side.
At various times in the Telemetry Room, the shadows of a boom mic and the cameraman can be seen being cast onto the speaking character.
When in the Telemetry Room, a boom mic moves into frame behind the character Jeff. Its shadow can be seen moving across the floor at 23:00.
At one point, Peter Mark Richman's character Rome calls Ron Hayes's character Coberly "Dex," who is actually played by William Stevens.