Eventually the under water intelligent species would develop a system for making calculations to aid them in their technological development. These underwater computers would probably be quite different from our own land based computing systems. Whereas dry land machines are capable of learning and of becoming/being intelligent themselves, water based computers could never achieve this logical impossibility due to lack of internet access. Their computers would be doomed to a world in which they only become more and more powerful every year instead of the artificial intelligences that ours have become. There is one thing however, that this underwater intelligent species shares with our own land based artificial intelligence, at this point neither exists.