Hello,

• The course is open for students who have completed their degree course in Biology/zoology/life sciences from a recognize university with 50% marks in aggregate.
• You should have strong knowledge about biological science and have an interest in learning about marine life.
• Most marine biologists do their jobs because they loike the work. It is a benefit in itself, even though compared to some other jobs, they don't make a lot of money, and the work is not always steady.
• You will need to be good at science and biology to complete the education necessary to become a marine biologist.
• The institutes in India offering M.Sc Marine Biology degree programme conducts its own entrance exam for admission.
• Fee structure of the M.Sc Marine Biology course varies institute-wise. The average fees are Rs 50,000 per year.

So as you have biology as your main subject you can give entrance exam of the respective Institute for admission.

https://www.careers360.com/courses/marine-biology-course

You can check the link for more information.

Hope this helps!!!