Marine Fishing and the Blue Economy in Kenya: Tuna, Aquaculture, and the Untapped Potential of the Indian Ocean

Kenya's marine and freshwater resources represent one of the country's most underexploited economic assets, with the blue economy currently contributing only KES 30 to 40 billion annually despite a potential estimated at KES 500 billion. The fishing industry employs over 60,000 fishers directly and supports approximately 1.2 million people across the production and supply chain, yet Kenya captures only a fraction of the value from its 230,000 square kilometre Exclusive Economic Zone in the Indian Ocean. President Ruto's 2025 announcement of KES 1.2 billion for deep-sea fishing vessels signals growing government ambition to transform Kenya from a marginal player into a significant force in the Indian Ocean blue economy.

Kenya's Fisheries: Current Production and Structure

Kenya's fisheries operate across three distinct ecosystems: marine waters along the 640-kilometre Indian Ocean coastline, inland freshwater lakes dominated by Lake Victoria, and a growing aquaculture sector. Total fish production from marine sources reached 39,950 metric tonnes worth KES 9.9 billion, while aquaculture contributed 31,767 metric tonnes valued at KES 10 billion. The fishing industry contributes approximately 0.5 percent of national GDP and about 2 percent of export earnings, figures that significantly understate the sector's importance to food security, nutrition, and coastal livelihoods.

Marine artisanal fisheries along the coast from Lamu to the Tanzania border employ thousands of small-scale fishers using traditional dhows, outrigger canoes, and increasingly motorized vessels. Key commercial species include tuna, prawns, lobsters, octopus, and various reef fish species. The artisanal sector operates predominantly within the 12-nautical-mile territorial waters, lacking the vessels and equipment to access the rich tuna fisheries in deeper offshore waters.

Lake Victoria remains Kenya's most productive fishery, historically dominated by Nile perch and tilapia. However, overfishing, pollution, and invasive species have significantly reduced catches from the lake's peak production levels. Communities around Lake Victoria have relied on fishing as a primary income source and food supply for generations, making the decline in fish stocks a serious livelihood and food security concern.

The Blue Economy Vision

Kenya's blue economy agenda encompasses far more than fishing, incorporating maritime transport, port operations, offshore energy, marine tourism, blue carbon ecosystems, and seabed mineral resources. The State Department for Blue Economy and Fisheries estimates that the sector has potential to contribute up to KES 500 billion annually and create over one million jobs, a transformative prospect for a country seeking to diversify its economic base.

Kenya's Exclusive Economic Zone is strategically situated along the Indian Ocean tuna migratory belt, ranked second globally in tuna production. Yet Kenya currently harvests only a tiny fraction of the tuna passing through its waters, with most catches taken by foreign-flagged vessels from Spain, France, South Korea, and China operating under access agreements that generate limited revenue for Kenya. The KES 1.2 billion presidential initiative to acquire 15 to 20 deep-sea fishing vessels aims to change this dynamic by building Kenya's own capacity to exploit offshore fisheries.

Aquaculture: The Growing Frontier

Aquaculture has emerged as Kenya's fastest-growing fisheries subsector, driven by government investment, declining wild fish stocks, and growing domestic demand for fish protein. The National Aquaculture Development Plan and Strategy 2025 provides the framework for scaling up pond-based, cage, and mariculture production. Freshwater aquaculture, predominantly tilapia and catfish farming in earthen ponds, dominates production, with significant operations in western Kenya, the central highlands, and along major river systems.

Marine aquaculture, or mariculture, has made progress through innovative technologies, with finfish species including milkfish accounting for about 90 percent of coastal aquaculture production. Seaweed farming along the coast, particularly in Kwale and Kilifi counties, provides income for coastal communities, especially women. Blue carbon potential in mangrove and seagrass ecosystems along Kenya's coast adds climate finance dimensions to marine conservation efforts.

Illegal, Unreported, and Unregulated Fishing

Kenya loses an estimated KES 45 billion annually to illegal and unregulated fishing, with IUU fishing accounting for between 30 and 40 percent of the country's total fish catch. Foreign trawlers, predominantly from China, Tanzania, and Italy, have been accused of overfishing in Kenyan waters and damaging the marine ecosystem. IUU operations exploit weak monitoring, control, and surveillance systems, taking advantage of Kenya's limited patrol capacity across its vast maritime zone.

The consequences extend beyond economic losses. IUU fishing erodes tax revenue, undermines the legal fishing industry, damages marine habitats, reduces biodiversity, and weakens coastal economies that depend on sustainable fish stocks. Marine fish biomass in Kenya is projected to decline by up to 40 percent by 2050, a trend that directly threatens artisanal fishing communities along the coast who lack the resources to compete with industrial vessels.

Regional cooperation has intensified, with East African nations developing joint monitoring and surveillance frameworks. A workshop organized by AU-IBAR in partnership with IGAD in Mombasa focused on strengthening regional MCS systems, recognizing that IUU fishing is a transboundary challenge requiring coordinated responses across the Indian Ocean region.

Challenges Facing the Fishing Sector

Poverty drives much illegal fishing activity, particularly in inland waters where limited job opportunities and growing demand for affordable food push people into unauthorized fishing. Artisanal fishers face rising fuel costs, declining catches, competition from commercial vessels, and climate change impacts including ocean warming and coral bleaching that alter fish distribution and reduce productivity of coastal ecosystems.

Infrastructure deficits including inadequate landing sites, cold storage facilities, and fish processing plants result in significant post-harvest losses and limit the value captured from Kenya's fish resources. The absence of modern fishing ports capable of servicing industrial vessels means that foreign fleets operating in Kenyan waters typically land their catches elsewhere, with the economic benefits flowing to ports in Seychelles, Mauritius, and other Indian Ocean nations with better infrastructure.

The Path Forward for Kenya's Blue Economy

Realizing Kenya's blue economy potential requires simultaneous investment in deep-sea fishing capacity, artisanal fisheries development, aquaculture expansion, marine conservation, and maritime governance. The blue economy represents a new frontier for investment, with opportunities in fish processing, cold chain logistics, fishing vessel construction and maintenance, marine biotechnology, and ocean renewable energy. Success depends on balancing exploitation with conservation, ensuring that coastal communities benefit equitably from marine resource development, and building the institutional capacity to govern one of the world's most valuable ocean spaces effectively.