Fishermen sit in a boat in Lake Naivasha which has been invaded by hyacinth in Nakuru county, Kenya's Rift Valley, Friday, Dec. 13, 2024. (AP Photo/Andrew Kasuku)

Fishermen Simon Macharia, left, and Jimmy Kamau harvest hyacinth at Lake Naivasha in Nakuru county, Kenya's Rift Valley, Friday, Dec. 13, 2024. (AP Photo/Andrew Kasuku)

Fisherman Simon Macharia harvests hyacinth at Lake Naivasha in Nakuru county, Kenya's Rift Valley, Friday, Dec. 13, 2024. (AP Photo/Andrew Kasuku)

Fishermen recover an abandoned fishing net destroyed by hyacinth in Lake Naivasha in Nakuru county, Kenya's Rift Valley, Friday, Dec. 13, 2024. (AP Photo/Andrew Kasuku)

A marabou stork patches on an abandoned fishing boat trapped in hyacinth at Central Beach in Lake Naivasha in Nakuru county, Kenya's Rift Valley, Friday, Dec. 13, 2024. (AP Photo/Andrew Kasuku)

A heron searches for food next to abandoned fishing boats trapped in hyacinth at Central Beach in Lake Naivasha in Nakuru county, Kenya's Rift Valley, Friday, Dec. 13, 2024. (AP Photo/Andrew Kasuku)

Hyacinth is seen at the shores of Lake Naivasha, in Nakuru county, Kenya's Rift Valley, Friday, Dec. 13, 2024. (AP Photo/Andrew Kasuku)

A boat carrying domestic tourists for a tour passes through hyacinth at Central Beach in Lake Naivasha in Nakuru county, Kenya's Rift Valley, Friday, Dec. 13, 2024. (AP Photo/Andrew Kasuku)

Fishermen fish at Lake Naivasha in Nakuru county, Kenya's Rift Valley, Friday, Dec. 13, 2024. (AP Photo/Andrew Kasuku)

A fisherman navigates his boat amidst hyacinth at Central Beach in Lake Naivasha in Nakuru county, Kenya's Rift Valley, Friday, Dec. 13, 2024. (AP Photo/Andrew Kasuku)

Fishermen Simon Macharia, left, and Hannington Were inspect fish for sale at Central Beach, Lake Naivasha in Nakuru county, Kenya's Rift Valley, Friday, Dec. 13, 2024. (AP Photo/Andrew Kasuku)