Classroom lesson · Lagoa Azul · 🇸🇹 São Tomé and Príncipe

Lagoa Azul

A sparkling blue lagoon where the jungle meets the sea

Photo · Wikimedia Commons

What is it?

Lagoa Azul — which means 'Blue Lagoon' in Portuguese — is a beautiful sheltered bay on the northern coast of São Tomé island. The water here is remarkably calm and clear, and the bright turquoise colour comes from sunlight bouncing off the white sandy bottom.

Tell me more

The lagoon sits in a gentle dip in the coastline where a coral reef close to the shore breaks the waves before they reach the beach. This makes the water inside very calm — more like a swimming pool than the open ocean. Families and children often swim here because it is so peaceful.

The jungle comes right down to the edge of the lagoon. Tall palm trees lean over the water, their long leaves casting shadows on the sand. Birds dart between the branches, and sometimes crabs scuttle along the shoreline. It feels like the forest and the sea are shaking hands.

Underneath the surface of Lagoa Azul, the reef is full of colour — pink corals, darting fish in yellow and blue stripes, and small creatures tucked into rocky crevices. Because the water is so clear, you can see all the way to the seabed even from a boat floating above.

Local fishermen have used the lagoon for centuries because it is a safe place to anchor their wooden boats out of the wind. In the evenings the water sometimes turns a golden colour as the sun sets behind the palm trees — a moment that visitors always remember.

In the classroom

Walk your class through this in 15 minutes.

Talk together

Discussion prompts

  1. 01Why do you think the water in a lagoon is calmer than the open ocean? What is stopping the big waves?
  2. 02If you could only bring three things to spend a day at Lagoa Azul, what would you bring and why?
  3. 03How does a coral reef help both fish and people who live near the sea?
Try this

Classroom activity

Create a 'cross-section' drawing of Lagoa Azul. On one side draw the jungle and beach, then show the shallow clear water, the coral reef, and the open ocean on the other side. Label each part and add three creatures or plants in the right place.