- Now, what's the one thing we have to remember about the ocean?
- It's not safe.
- That's my boy.

Marlin (Albert Brooks), Nemo (Alexander Gould)

7 seconds sound clip from the Finding Nemo movie soundboard.

You can hear this line at 00:06:53 in the Blu-ray version of the movie.

Quote context

[...]

- Come on, Dad. It's time for school.

- Forgot to brush.

- Do you want this anemone to sting you?

- Yes.

- Brush.

- Okay. I'm done.

- You missed a spot.

- Where?

- There. Right there. And here and here.

- All right, we're excited. First day of school. Here we go. We're ready to learn to get some knowledge.

- Now, what's the one thing we have to remember about the ocean?

- It's not safe.

- That's my boy.

- So, first: we check to see that the coast is clear. We go out and back in. And then we go out and back in. And then one more time. Out and back in.

- And sometimes, if you want to do it four times... All right. Come on, boy.

- Dad, maybe while I'm at school, I'll see a shark.

- I highly doubt that.

[...]