An educational film on unknown microorganisms discovered in the potassium salts of the Permian Sea.
| Release Date | December 1, 1970 | |
|---|---|---|
| Status | Released | |
| Original Title | Узники Пермского моря | |
| Runtime | 19min | |
| Budget | — | |
| Revenue | — | |
| Language | Russian | |
| Original Language | Russian | |
| Production Countries | Soviet Union | |
| Production Companies | Leningrad Popular Science Film Studio | |