Anjanamba cave

{{short description|Submerged cave system in Madagascar, the longest of Africa}}

Anjanamba is the name of a cave in South-Western Madagascar, Atsimo-Andrefana region, in the Mikea Forest.

It is a fully submerged cave system that has been explored to more than 10km (in 2019) using cave diving techniques. It is the longest underwater cave of Africa.{{Cite web|url=https://tekdiveusa.com/tekdiveusa-2020-anjanamba-africas-longest-submerged-cave/|title=Tekdive USA.2020 - Anjanamba Africas longest submerged cave of Africa}}

The cave was first described by Jean-Noël Salomon in 1987 in his PHD Thesis, as a vertical shaft giving access to the water table. He reports the name Ampanonga.{{Cite thesis|title=Le Sud-Ouest de Madagascar|last=Salomon|first=Jean-Noël|date=1986-01-02|degree=PhD Thesis|publisher=Université d'Aix-Marseille 2|language=fr}}

In 2016, Ryan Dart (Madagascar Cave Diving Association) and Phillip Lehman (Dominican Republic Speleological Society) rediscovered the entrance and started the underwater explorations. Gathering a team of cave divers, 4 expeditions have been conducted in the cave and more than 10km of flooded passages have been explored and mapped.

Three short films have been produced on the explorations, titled Spirits of the Cave.{{Cite AV media|url=https://vimeo.com/243557461|title=Spirits of the Cave|last=Lehman|first=Phillip|date=|type=video|publisher=DRSS|year=2017}}

The cave hosts cavefish of the genus TyphleotrisFishBase team RMCA & Sparks, J.S. 2016. Typhleotris pauliani. The IUCN Red List of Threatened Species 2016: e.T22596A58303542. https://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22596A58303542.en.