I need some rocks from the bottom of the lagoon for a test.

3 seconds sound clip from the Creature from the Black Lagoon (1954) movie soundboard.

You can hear this line at 00:20:56.973 in the Blu-ray version of the movie.

Quote context

[...]

- The Black Lagoon.

- The beautiful lagoon.

- Another world.

- Take her out a little farther, then we'll get the net over the side.

- You expect to catch a fish?

- We might as well find out what species are here.

- We're not interested in what species of fish are here. We're after the rest of that fossil, remember?

- I need some rocks from the bottom of the lagoon for a test.

- But we just got here.

- Why waste time?

- If any parts of the wall that contained the fossil were ever deposited in here, the rock test should prove it.

- Yeah.

- I'll get the Aqua-Lungs.

- You be careful, David. We don't know what's down there.

[...]