Your question is kind of unclear, so I'm assuming you want to replace the water in the ocean with methanol?
For one, methanol is toxic to most organisms. So for a start, humans and most other intelligent life forms would not exist, as we would not have a fresh safe drinking water supply. That eliminates most, if not all fish and other sea animals, which basically just leaves us with plants. According to this website,
Methanol is the simplest alcohol. It is often used as a racing fuel and as a solvent. Studies have shown that methanol actually stimulates the growth of many cultivated plants. Methanol is used by the plant's metabolism in the same way the plant uses carbon dioxide. A solution of 30 percent methanol seems to be most effective in increasing plant yield.
It says that methanol would help stimulate the growth of many plants, but they would still need a moderate amount of water to photosynthesize and survive.
TLDR: No plants, animals or humans, other than extremely hardy prokaryotes.