Jemaja is close to the strategically important Singapore Strait.

The island is populated with several villages and is heavily vegetated, including thick mangrove groves,[1] and the waters off Jemaja are rich with corals.

The economy of Jemaja is small, but the island has been considered for increased economic investment to promote its use as a tourist destination.

[2][3] Several sources have noted that the island possesses beautiful beaches.

[6][7] From 2007 to 2017, 34 incidents of piracy/armed robbery at sea occurred off the Anambas Islands, some of which originated from Jemaja.