The presentation is spot on - from the in game art to the UI, the intro and all the other little pieces. I was definitely drawn into the style of it all as soon as I launched the game. I liked the upgrade / fishing loop, and having to search while avoiding the creatures, it was fun to navigate and only left me wanting more to explore, but that would probably require more than 7 days to expand further.
My only nit pick would be around the controls. It was tough to handle navigation, fishing, and other abilities all together as most things were on the left side of the keyboard. I think I might have preferred the fishing controls and the abilities on the right side, but I'm sure that would take some time to experiment with. Well done!