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📘 How whales communicate underwater

Follow whale calls, anatomy, sound transmission, echolocation, hydrophones, and ocean noise.

lessons

~10 min

to learn

🔬 Science

subject

Adults

level

Start the course →

What you’ll learn

Soundscape
Production
Transmission
Anatomy
Contact
Echolocation
Song
Hydrophones
Ocean noise
Meaning

Questions this course answers

Why is sound especially useful underwater?

Light penetrates only limited depths, while sound can travel long distances through water.

What can an echo delay tell a toothed whale?

The time between click and return indicates distance.

What does a hydrophone measure?

Hydrophones convert underwater acoustic pressure into recorded signals.

How can ship noise affect whales?

Added noise reduces signal-to-noise ratio and can disrupt communication or behavior.

Why do researchers use spectrograms?

Spectrograms make call structure visible for comparison and identification.

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