The government plans to establish a transboundary conservation area from Tanga to River Kongo in Tiwi Kwale county.
The project is part of efforts to increase management of marine life conservation areas to 30 per cent by 2030.
Wildlife Training and Research Institute senior scientist Mohammed Omar said talks are underway between Kenyan and Tanzanian to implement the project.
Kenya has less than one per cent of ocean conserved areas which is too low for marine life conservation.
Omar said the project will enhance conservation of marine ecosystems, ecotourism, employment opportunities and economic growth.
"Our marine managed areas are very few and are not designed to accommodate broad species of marine life, making it hard for us to fully exploit blue economy opportunities," he said.
Some of the marine life include whales, sharks, endangered dugongs and sea turtles that travel for long distances and require big and suitable managed areas for their population growth.
Kisite Mpunguti Marine National Park in Mombasa county is one of the preserved marine ecosystems in Kenya with a lot of impact, but very small.
Omar said the project will improve conservation of various endangered sea species and strengthen sustainable fishing activities.
He said the project will also maximise benefits for the ocean-dependent communities.
The scientist said they are training communities through beach management units.
So far, more than 30 BMUs from Vanga and Tiwi have been trained on effective management of marine reserved areas for biodiversity, investments and tourism expansion.
At the moment, BMUs don't benefit from the projects because of a lack of proper conservation and business skills.
"Many tourists visit Kisite Mpunguti, but the surrounding community remains impoverished because they are not properly empowered," Omar said.
WWF Coast programme manager Asma Awadh said it is important to heighten ocean conservation.
She said sea pollution occasioned by improper waste management and other destructive ocean activities has affected marine life and human beings.
Awadh said some fish species are at risk of going extinct because of continued pollution.
"We used to have dolphins and dugongs, but their numbers have decreased and they are now rarely seen," she said.
Poor conservation mentality and delayed interventions are the primary reasons for the slow response to conservation efforts.
Many Kenyan universities also started offering conservation and environmental courses late and graduates are still fresh to the emerging environmental challenges.
She said despite decades of pollution, Kenya began conservation campaigns late and relevant agencies are still working on appropriate solutions.
Awadh said it might take a while for the benefits to be seen but the country is headed towards the right direction.
WWF in partnership with various state agencies is implementing nature-based solutions for climate change adaptation programmes.
Awadh said the programmes are meant to promote sustainable livelihood through conservation activities.
Mombasa branch KMFRI principal research scientist Gladys Okemwa praised the government's efforts in conservation, saying management measures are yielding fruits.
She said the plastic ban has helped combat ocean and environmental pollution.
Plastics and nylon papers are major pollutants of the environment.
KMFRI is also teaching fishermen good fishing methods for sustainable income.
