Abstract: A study to determine the awareness and adoption levels of disseminated fisheries technologies and the impacts of extension activities among the rural fisher-folks was carried out in two Nigerian maritime states of Lagos and Rivers. Structured questionnaire was used through interviewed schedules to obtain information from respondents in two fishing villages in a local government area in each state. The fisherfolks were randomly selected and consisted of fishermen, fish processors and fish farmers. The Agricultural Development Projects (ADPs) in the states assisted in the selection of the study sites. Data collected were analyzed by simple descriptive statistics of frequencies percentages and means. Results obtained showed that about 57.5% of the fisher-folks were in the economically active age group of 31-50 years, with mean age at 38 years in Lagos and 30 years in Rivers. Female fisher-folks constituted 30.0% of the respondents. The modal house hold size for both states was 6-10 constituting 51.3% of the respondents. About 50.0% of the fisher-folks had at least secondary school education with some of them (51.3%) relatively young in the business (1-10years experience). In spite of the fact that about 60% of the respondents were members of cooperative societies, most of them (81.0%) finance their businesses with personal funds. Fisher-folks in Lagos had higher levels of awareness (76.5-85.3%) and adoption (70.6-79.4%) of aquaculture technologies than Rivers state, with awareness and adoption levels of 7.5-22.5 and 5.0-20.0%, respectively. The awareness and adoption levels of disseminated technologies in post harvest handling in capture fisheries were lower in Lagos (26.5-47.1 and 17.6-47.1%, respectively) than in Rivers state (45.0-72.5 and 25.0-50.0%, respectively). On the average, more impact was recorded in both states on better income from fishing, fish processing and quality of diet. The most constraining factors to adoption among the respondents were high cost of adoption inputs, insufficient creation of awareness, scarcity of adoption inputs and lack of technical support in adoption practices, among others. Recommended measures to promote awareness and adoption levels in the two states vis-à-vis Nigeria as a whole, include proper testing and validation of recommendations at the fisher-folks� end before pushing the technologies for mass adoption, improvement of various strategies used in disseminating improved technologies and proper funding of fisheries extension activities to promote adoption and overall fisheries development.