Does anyone know the coordinates (latitude and longitude) of the Pacific Ocean?

I am doing a project for science and can't find anything about the latitude and longitude range specifically for the Pacific Ocean. If you have any extra time, could you also help me find a good website for the plant life in the Pacific Ocean. I googled it and found an article for palm trees in Hawaii (which was no help) I can't find anything that lives underwater that is not an animal (like sea cubers and coral) Thanks so much for taking the time to help me!!!