searching in the internet & fishing

we can compare main parts of information searcing process in the internet with the main parts of fishing process as below:

fisherman as searcher or user
fish as scientific message(textual,visual ,sound,...)
fish hook,net as search engine
fish fly as key words
the potential collection of fish that can be caught as databaes
fisherman's basket for fish as n note(saves personal database files)
the edge of fish pool or sea as website(which is equipped whith browser)