Mimi #2: Genie

Not all marine life, just the big stuff. We just added a ton of sugar, fat and protein to the ocean, so I think we're going to see an explosion of microbial life.

Now, with milk being opaque, I think we are going to kill most of the phytoplankton and replace it with bacteria that produce CO2 as a byproduct of their metabolism, so I do think we're going to drastically change the Earth's atmosphere and more or less run out of oxygen eventually, so we are definitely all dead. It's just a question of how long it takes.

She wouldn't have even had time to get to wish 2 and 3. "All water" includes the water in her body. Turning all of it into milk would probably kill you.