Did you mean "open ocean creatures"? While tuna can dive 500-1000 meters, and while technically "deep sea" refers to >200 meters, I generally consider "deep sea creatures" to be those that live primarily/exclusively in environments with no light and high pressure, like on the sea floor (~3500m) or in trenches (down to ~11,000m).
But I could be wrong! Maybe a marine biologist or oceanographer can clarify? (Lemmy needs a Unidan, minus the ego and voting fraud.)
Either way, zero overlap with any feline habitats.
The issue I'm raising here is that (again using an example from the newspaper days) you can have a singular strip that's "complete," with its own setup and punchline, that's still part of an overarching story.
Imagine, say, Garfield, where on Monday Jon takes Garfield to the vet, Tuesday through Friday's strips take place during said vet visit (each strip featuring its own joke that could be understood on its own, but is enhanced by the context provided by the other strips that week), and then on Saturday Jon takes Garfield home, ending the vet visit saga. Posting the "complete story" would require posting all six comic strips together, even though they were published separately and (more often than not) are still understandable (and hopefully funny) even without having read the other five strips that constitute the "complete story."