“My canoe is only suitable for the near shore and only those with the big boats and money can access tuna,” he said. Miongo explained that warming waters due to climate change forced tuna species to alter their migration patterns, making it harder for local fishers to catch them. Fish stocks have also decreased due to a lack of sustainable fishing by larger vessels.

The Shimoni channel, previously a well-known haunt for tuna, benefits from the north and south easterly monsoons which can lead to substantial catches, according to records kept by the Kenya Fisheries Service.