Under the Sea

Try This At Home

Hear the Ocean

You Will Need

  • A large sea shell
  • Your ear

What to Do

  1. Hold the shell up to your ear.
  2. It will sound like the ocean.

What's Happening?

It is not really the ocean that you are hearing. What you are hearing is the ambient noise around you. The shell resonates the sounds that go into it, making them louder. It also echoes them around. This means that rather than hearing individual noises and sounds, they all get blended together into one jumbled up sound, very similar to that of the ocean.

Discover More

  • Try with different sized shells.
  • Try doing the same thing using a plastic cup. Try taping different things in the bottom of your cup and see if it sounds different. Things to try include cotton wool, aluminium foil or even scrunched paper!

Did You Know?

Sharks and dolphins may look similar but they are very different. A shark is a big fish. It uses gills to breath by filtering air out of the water. A dolphin is a mammal, like a human, and they breathe air like you do. They have to swim to the surface of the water to take a breath. Whales are also mammals and breathe air.

Sound travels better under water than through the air. Whales communicate by making very long, low pitched sounds, known as whale songs. These sounds travel long distances through the water, allowing the whales to hear each other from hundreds of kilometres away. This is much further than sound travels on land.