Hi René,
To answer your question, you can use the YANGO APP (Play Store or App Store links below) for taxis. It’ll cost you between 3,000 and 10,000 FCFA. For each ride, the options and prices are displayed in the app:
https://play.google.com/store/apps/details?id=com.yandex.yango&hl=fr
https://apps.apple.com/sn/app/yango-taxi-repas-livraison/id1437157286?l=fr-FRThere are also private taxis at the airport that go to the city of MBOUR, from where you can head toward La SOMONE. These taxis usually raise their prices (between 15,000 and 25,000 FCFA, sometimes more), but don’t hesitate to negotiate all fares down (around 11,000 FCFA). It’s common practice.
Another option is the air-conditioned bus service run by the public company Dakar Dem Dikk. There’s supposedly (I’ve never taken it) a shuttle to MBOUR for 3,000 FCFA. The shuttle within Dakar costs 6,000 FCFA. You can even book the latter online here -->
https://booking.demdikk.sn/reservation.phpIn any case, make sure to ask for additional info from the officials at the airport if you’re unsure.
I’m also available if you need more help. I’ll try to get back to you as soon as I can.