The Bay of Ghoubbet, at the western end of the Gulf of Tadjoura, is one of the most dependable locations in the world to swim alongside a massive whale shark (Rhincodon typus), the world’s largest fish. The peak season runs from November to January. There are between two and 10 individuals, close to the shore, and it’s very easy to snorkel with these graceful creatures.
This activity has exploded in recent years, and plenty of unprofessional operators can arrange trips. It’s better to stick to well established outfits that are ecologically sensitive and follow protocols. Give the sharks a berth of at least 4m. Touching is an absolute no-no.