Internet is a global communication system interconnected with computer networks and intended to exchange the information of any kind. It is frequently called »network of all the networks« because it incorporates thousands and thousands of various computer networks all around the world and in order to communicate, has the same technical standards. The Internet has become an exclusive, unique source of information forever growing population. It has also become an ideal communication channel because of its dynamics, interaction, tractability and miraculously manageable updating of the content published. Nowadays, when fisheries starts playing and important role in Croatia, many people seek professional advice and guidance via Internet in order to fulfil their demanding professional tasks.