Classroom lesson · Champagne Reef · 🇩🇲 Dominica

Champagne Reef

An underwater reef where bubbles rise from the sea floor

Photo · Wikimedia Commons

What is it?

Champagne Reef is an underwater reef off the southwest coast of Dominica where thousands of tiny bubbles rise from cracks in the sea floor — just like the bubbles in a glass of fizzy drink. The bubbles come from hot volcanic gases escaping from underground, and they tickle your skin if you snorkel or swim through them.

Tell me more

When you put your face in the water at Champagne Reef, you see trails of silver bubbles rising from the sandy bottom in streams and columns. The bubbles are carbon dioxide gas coming from the same underground volcanic activity that heats Boiling Lake. Because of the warm water and the gases, the sea floor here looks almost alive — constantly fizzing and dancing.

The reef is very shallow in places — sometimes just one or two metres deep — which means even young snorkellers can experience it. The warm, mineral-rich water is home to a surprising amount of sea life: bright parrotfish, seahorses, sea turtles, and many types of coral grow here despite the unusual conditions.

The name 'Champagne Reef' came from the way the bubbles reminded visitors of the bubbles in a fizzy drink. It has become one of the most famous snorkelling spots in the whole Caribbean. Because Dominica protects its waters carefully, the reef stays healthy and full of colour.

In the classroom

Walk your class through this in 15 minutes.

Talk together

Discussion prompts

  1. 01Why do you think bubbles rising from the sea floor would make the water feel different from a normal beach?
  2. 02The reef is unusual but still full of sea life. What does that tell us about how plants and animals can adapt?
  3. 03How would you describe Champagne Reef to a friend who had never heard of it, using only things they already know?
Try this

Classroom activity

Draw an underwater scene at Champagne Reef. Show the sea floor with streams of bubbles rising up, a snorkeller above, and at least four creatures (sea turtle, parrotfish, seahorse, coral). Add labels and arrows showing where the bubbles come from underground.