Hello keerthana

If you wish to become a marine researcher then you will have to study msc in Marine Biology . For that you must do BSC in Marine biology.

Eligibility for ug in Marine biology is to have passed xii board with minimum 55% marks with Physics, chemistry and biology subjects.

Msc in Marine biology is two years post graduate program and it gives in-depth study about marine Science. Eligibility for msc course is to have graduate degree in Marine biology with minimum 50% marks.

After doing msc if you want to become researcher then you will have to go for phD in Marine biology.

For studying undergraduate course in Marine Science there are two colleges in India , one is government Science college Gujarat and other is Ismail Yusuf College if arts, commerce and science,  Indian Maritime University Mumbai also offers Btech in engineering.