Hi and welcome and well met and all that. You may well find out some things about ECF just hanging about, like a fish hangs about in water.
If there are specific things you want to find out, probably some questions would be in order, like, are you wanting a guppy experience or a shark experience, or like, where the best, least polluted water is and like, how to avoid getting hooked but still eating worms and etc.
You might be a sponge, in which case hang about, absorb, and have fun.
Welcome, well, from the clownfish if I have to really stretch the analogy to its illogical conclusion.
Anna