Africa underwater: whale sharks, whales and turtles

The coast of East Africa and the islands of the Indian Ocean are not just beaches. Some of the largest animals in the sea live in or pass through these waters, and at certain times of year meeting them is an experience worth planning for, just as you would a national park.

The whale sharks of Mafia

South of Zanzibar, the island of Mafia is one of the most reliable places in the world to swim with the whale shark, the largest fish in existence. The main season runs roughly from October to March, when the sharks feed on plankton near the surface in Kilindoni Bay. They are harmless to humans: you watch them while snorkelling, without touching them and keeping your distance. Mafia also has a marine park with coral reefs and turtles.

Further south, in Mozambique

Tofo, on the coast of Mozambique, is known for whale sharks and manta rays, with the best months between October and March, when the water is richest in plankton.

The whales of Madagascar

Between July and September humpback whales travel up the Indian Ocean to breed, and off the island of Sainte Marie, in Madagascar, they can be seen from the boat and sometimes even from the shore.

Turtles and reef, in Zanzibar and Kenya

Around Zanzibar, snorkelling on the coral reef brings turtles and reef fish into view. In Watamu Marine National Park, on the Kenyan coast, sea turtles lay their eggs on the beaches.

How to choose an excursion

Avoid anyone who promises you can touch or feed the animals, anyone who chases dolphins or whale sharks with several boats at once, and anyone who does not explain the rules before you enter the water. A good operator limits the number of people in the water and the time spent near each animal. It is the same principle as on safari: the right distance is the one that does not change the animal’s behaviour.