They don't seem to have any concept whatsoever to back them up. They look pretty, but having the skills to make pretty things doesn't work when it comes to logo design.
Take the diving logo as an example, or mantis, they don't relate to their subject matter. Especially mantic, why would you make the M so bold, harsh, almost authoritarian when flowers are anything but?
hey man, this is a great job in logos!!! i loved all of them! but actually i think that the ones that are in the last row cant reduce to minimal size! so they cant be so usefull in the future!! but they also look great! pretty nice job! congratulations!!