[5] The Obolo occupy the longest stretch of the Cross River Basin of the Niger Delta mangrove belt, which also houses the largest oil and gas deposits in the Gulf of Guinea.
[citation needed] They worshipped a national deity called Yok-Obolo, the founder and spiritual head of the Obolo people, said to have been elevated to a god status upon death.
[citation needed] In response to the stories about the Obolo, British colonial authorities decided to send a punitive expedition against them in 1904.
The expedition was led by Captain A.A. Whitehouse, with the aim of destroying Obolo as a political entity and reducing their influence among neighboring tribes in the Niger Delta.
This ancient, elaborately choreographed fishing method is peculiar to Unyeada people, and features net casting fishermen arranged in two opposite rows of 30 canoes or more.
When a whistle-blower signals, the paddling of the canoes from the opposite direction drives schools of fish into the middle, before the fishermen cast their nets in synchronization, ensuring a large catch.
[citation needed] Present day Andoni or Obolo people follow Christianity and most parts have fully incorporated it into their culture while some still worship local god/gods.