- Here it is. Phosphorum pyrifora.
- Like, speak English.
- A phosphorus-glowing seaweed found only in the area known as the Graveyard of Ships.

11 seconds sound clip from Scooby-Doo, Where Are You! - A Clue for Scooby Doo (S1E2).

You can hear this line at 00:10:43.835 in the Blu-ray version of the episode.

Quote context

[...]

- Me?

- Yes, you. You're the only one that can squeeze into that drainpipe.

- Uh-uh. Too fat.

- Too fat?

- Would you squeeze in for a Scooby Snack?

- Uh-uh. Uh-uh. Uh-uh. Uh-huh. Ruff! Scooby-Doo!

- Like, wow! Glowing seaweed!

- It looks like you found a clue, Scooby-Doo.

- Well, Scooby-Dooby-Doo!

- Did you find anything?

- Here it is. Phosphorum pyrifora.

- Like, speak English.

- A phosphorus-glowing seaweed found only in the area known as the Graveyard of Ships.

- That's where Captain Cutler went down.

- Then maybe that's where we'll find his ghost and the answer to our mystery.

- But what about Ebenezer Shark?

- I don't know, but he headed for the marina about an hour ago.

- I wonder what he's up to.

- There it is... the Graveyard of Ships.

[...]