For tuna you have to go out to deeper water, dark blue but not the impassible dark blue and fish there. It's rarer to get, made even harder by the fact that the timing game is tougher.
For the Mikoto thing do you mean the giant stone head arena? I think that's the one where you kill all the monsters and a chest will appear in the middle with a statue in it. Or not, I'm not sure what you're talking about with golems. --- I should not walk so a child may live.----http://www.spore.com/view/profile/Catsimboy
You only need to be at the edge of the deepest water since you can't travel through it, however unless you have upgraded your rod and fishing skill, fishing for tuna is incredibly hard. First off, it' rare to actually hook one. Secondly, you'll know it's tuna since the bar will be almost completely red except for a little bit of blue at the end, making it incredibly difficult to time.
If you're far enough in the game and have been picking up small treasure chests from the random islands that you can raise, there's a good chance you can find tuna in one of them if you get it appraised, this happened to me by accident after trying for a while to fish for tuna and giving up. I also found one once afterward, I don't know if the treasure chests are set or if they're have random items, but both the tuna's I found were on random sunken islands/ships in the northwest past the reef.
leilayaj posted... As for Joe, how do I go to deep blue water when I can't even get out there by myself without my golem? When you get out there press up on the d-pad to leave golem control and cast your line off the side of the golem. --- I should not walk so a child may live.----http://www.spore.com/view/profile/Catsimboy