Information dissemination played a significant role in all societies and today communication technologies play a major role in addressing the current needs of fishermen. Exchange of vital information can assist fishing communities in making efficient decisions in fishing operations, arranging trade, retailing at a local market, participating in a meeting, etc. Unlike other livelihood, fishing profession has been found to be tough and challenging as uncertainties often occur due to lack of communication connectivity issues in the sea. However, the ICT have increased the knowledge of fishermen and also enhanced their communication behaviour. The tremendous advantages of mobile phones stand apart among the various communication devices in fishing activities. In order to understand the present use of mobile communication technologies by the fishermen, a study was conducted in four fishing villages of Thoothukudi and Kanyakumari districts of Tamil Nadu with a sample size of 120 fishermen. The fishermen were interviewed and their responses towards the mobile communication technologies in fisheries were collected. The results showed that all the respondents had one or more mobile phones for sharing information related to fishing activities. In order to overcome the possibility of the unpredictability of price for the catch, the fishermen use the mobile phones to exchange information while they are in the mobile coverage regions of the sea and thereby arranging the trade. The response rate for arranging the fishing trade with mobile phones is higher. A significant portion of fishermen used the mobile phone during emergencies. WhatsApp has been primarily used by almost all the fishermen for sharing the pictures and videos of their catches other than recreational activities. Due to the low level of education, SMS/ Text message services were used by only a limited number of fishermen. The majority of the respondents indicated that the lack of knowledge in English was the major constraint in using the major features of mobile phones. The coverage of mobile phone signals in the sea is almost 10 to 15 kms and beyond that they have no access to communicate among them or even with their families. This poses problem during an emergency situation like engine failure, unexpected weather conditions, etc. This paper delineates the use of mobile communication technologies, its problems, prospects and further to improve its application for enhancing the livelihood opportunities of fishermen.