Invasion From the Ocean Floor! #21
| Series | The Sub-Mariner |
| Number | Vol. 1 #21 |
| Publisher | Marvel Comics, Magazine Management Co., Inc. |
| Date | 1970-01 |
| Type | Comic Book, Softcover |
| Language | English |
| Colorist | Marie Severin |
| Cover Artist | Marie Severin, Johnny Craig |
| Editor | Stan Lee |
| Inker | Johnny Craig |
| Letterer | Artie Simek |
| Penciler | Marie Severin |
| Writer | Roy Thomas |
| Genre | Superhero |
| Published in | New York |
| Pages | 32 |
| Characters | Prince Namor (Sub Mariner), Lady Dorma, Diane Arliss |
| Story Location | Atlantic Ocean; Atlantis, NYC |
| Links | https://marvel.wikia.com/wiki/Sub-Mariner_Vol_1_21 |
Added by mlopinto