You didn't wait long enough before coming up.
3 seconds sound clip from the Creature from the Black Lagoon (1954) movie soundboard.
You can hear this line at 00:39:29.382 in the Blu-ray version of the movie.
Quote context
[...]
- Mark, we're out for photographs for study, not trophies.
- This thing alive and in its natural habitat, it's valuable to us.
- Why settle for a photo when we can get the real thing?
- You don't sound like a scientist. You sound like some big-game hunter out for the kill.
- We may not be back home, David, but you're still working for me.
- You didn't wait long enough before coming up.
- Why'd you shoot? You weren't attacked!
- You sound as though I put the harpoon through you.
- What makes you think we're supposed to play tag with the thing, whatever it is?
- I tell you, we can learn more from it if it's alive!
- Please, what is it that you found?
- I don't know what you'd call it.
[...]